☆ 4.6 Review

Recent Advances in CFD Simulations of Multiphase Flow Processes with Phase Change

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2023)

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Tenglong Cong et al.

Summary: The critical heat flux (CHF) of a rod bundle with guide thimble was predicted using the Eulerian two-fluid framework and the critical heat flux model. The CHF and thermal-hydraulic parameters were compared with those of a bundle without guide thimble. The results showed that the CHF in the fuel assembly with thimble was slightly higher and the boiling crisis was affected by the guide thimble, which also suppressed the inter-channel cross flow.

ANNALS OF NUCLEAR ENERGY (2022)

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Article Thermodynamics

Numerical study on heat transfer enhancement by spray-sublimation cooling with dry ice particles

Weishu Wang et al.

Summary: This paper presents a novel numerical method of spray-sublimation cooling with dry ice particles. The key factors of heat transfer enhancement and prediction are explored, and the effects of different parameters on the cooling performance are studied. The results show that increasing the nozzle inlet velocity and dry ice proportion can improve the cooling heat flux and heat transfer coefficient.

APPLIED THERMAL ENGINEERING (2022)

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Article Engineering, Environmental

A meta-analysis of thermo-physical and chemical aspects in CFD modelling of pyrolysis of a single wood particle in the thermally thick regime

Przemyslaw Maziarka et al.

Summary: This study constructed a state-of-the-art model in a stepwise mode to investigate the distribution of heating rate in the thermochemical conversion of larger biomass particles. Several datasets were used for development and validation, resulting in accurate results. The research revealed a pattern in volatiles release profiles and homogeneous heating rate distribution when the particle size is below 4 mm.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Thermodynamics

Experimental and numerical investigation of change in boil-off gas and thermodynamic characteristics according to filling ratio in a C-type cryogenic liquid fuel tank

Gyu-Mok Jeon et al.

Summary: This paper presents an experimental and numerical investigation on the changes in boil-off gas and thermodynamic characteristics in a cryogenic liquid fuel tank. The experiment validated the simulation results, which showed a good representation of the complex physical phenomena associated with heat transfer and vaporization in the tank system. The simulation also provided visualizations of physical quantities, facilitating the understanding of phenomena that are difficult to approach through experiments.

ENERGY (2022)

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Article Thermodynamics

Effect of fins and nanoparticles in the discharge performance of PCM thermal storage system with a multi pass finned tube heat exchange

Joao Passaro et al.

Summary: This study investigates the heat exchange process of a latent heat thermal energy storage system equipped with a compact finned tubes heat exchanger. Numerical simulations were conducted to evaluate the performance of the energy discharge process under different fin pitch values and PCM thermal properties. The results show that the addition of graphene nanoparticles significantly enhances the PCM thermal conductivity, while applying thin fins effectively enhances the discharge performance of the system.

APPLIED THERMAL ENGINEERING (2022)

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Article Thermodynamics

Two-phase nozzles performances CFD modeling for low-grade heat to power generation: Mass transfer models assessment and a novel transitional formulation

Egoi Ortego Sampedro et al.

Summary: The study investigates the use of two-phase nozzles for low-grade heat valorization by electricity production and compares a new TA-BD model with other literature models, finding that the TA-BD model is the most flexible and robust. It shows the best performance in efficiency, especially at the best efficiency point of the first test case.

THERMAL SCIENCE AND ENGINEERING PROGRESS (2022)

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Review Thermodynamics

Fluid flow and heat transfer in microchannel heat sinks: Modelling review and recent progress

Jie Gao et al.

Summary: This article reviews the thermodynamic research on microchannels, focusing on numerical methods in the past five years, providing a useful benchmark for future studies.

THERMAL SCIENCE AND ENGINEERING PROGRESS (2022)

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Article Energy & Fuels

Influence of phase change material encapsulation shape on performance of energy-efficient roof design

Dora Nagaraju et al.

Summary: The design of passive cooling systems is crucial for energy-efficient buildings. The use of phase change materials (PCM) to modify conventional roofs can effectively control abnormal temperature changes. In this study, numerical investigations were conducted to analyze the impact of different encapsulated shapes on PCM's average temperature, liquid fraction, and energy storage. The results showed that roofs with elliptical encapsulated PCM significantly reduced the inner surface temperature, indicating the sensitivity of PCM performance to encapsulated shape and location within the system.

ENERGY STORAGE (2022)

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Article Thermodynamics

Numerical Investigation on Unstable Direct Contact Condensation of Steam in Subcooled Water

K. N. Jayachandran et al.

Summary: This paper focuses on the study of unstable direct contact condensation of steam jets in subcooled water occurring at low steam mass flux using numerical techniques. The numerical results showed a reasonable agreement with experimental data, providing insight into the unstable nature of the steam jets and their effects on plume shapes, heat transfer coefficients, and pressure amplitudes. The article also compared semi-empirical models with simulation data to provide design recommendations for direct contact condensers.

HEAT TRANSFER ENGINEERING (2021)

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Article Engineering, Chemical

Thermal performance and economic analysis of an indirect solar dryer of wood integrated with packed-bed thermal energy storage system: A case study of solar thermal applications

Bilal Lamrani et al.

Summary: This study investigated the thermal performance and economic feasibility of an indirect solar wood dryer integrated with a thermal energy storage system. A new numerical model was developed and simulations showed that integrating the storage system can significantly reduce drying time and payback period. Results indicated that the system is most suitable for Zone 6 with a payback period of 1.85 years.

DRYING TECHNOLOGY (2021)

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Article Thermodynamics

Efficacy of incorporating PCMs into the commercial wall on the energy-saving annual thermal analysis

Quyen Nguyen et al.

Summary: Incorporating phase change materials (PCM) into building walls can effectively reduce annual heat transfer, with better performance in warmer months and a more significant effect with lower thermal conductivity.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY (2021)

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Article Thermodynamics

Simulation of Spray Cooling on Hot Steel Slabs in Continuous Casting

Haibo Ma et al.

Summary: Continuous casting is a crucial process in solidifying molten steel, where efficient and uniform cooling without causing cracking or deformation is a major challenge. Through the use of computational fluid dynamics, a numerical model for spray cooling has been developed to enhance the process.

JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS (2021)

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Article Thermodynamics

Computational fluid dynamics model for a variable conductance thermosyphon

Cho-Ning Huang et al.

Summary: A computational fluid dynamics (CFD) model was developed to predict the behavior of a variable conductance thermosyphon in different operating temperatures, showing accurate results compared to experimental data.

CASE STUDIES IN THERMAL ENGINEERING (2021)

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Article Thermodynamics

Combined effect of using porous media and nano-particle on melting performance of PCM filled enclosure with triangular double fins

Shu-Bo Chen et al.

Summary: This study investigated the performance of a vertically oriented PCM storage system with different types and combinations of PCM. Lower volume fractions of nanoparticles can enhance melting performance when using nano-PCMs, while using porous media can significantly improve the melting process.

CASE STUDIES IN THERMAL ENGINEERING (2021)

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Article Thermodynamics

PCM assisted heat pipe cooling system for the thermal management of an LTO cell for high-current profiles

Hamidreza Behi et al.

Summary: This paper introduces the concept of a passive thermal management system for electric vehicles and examines the effectiveness of different thermal management techniques through experimental and numerical tests. The results show that heat pipe and PCM assisted heat pipe cooling systems have a significant cooling effect compared to natural convection.

CASE STUDIES IN THERMAL ENGINEERING (2021)

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Article Energy & Fuels

Study on Flow Boiling Characteristics in Rectangle Channel After Formation of Blisters

Huijian Huang et al.

Summary: This study used CFD method to investigate the subcooled boiling characteristics of water in rectangular channels with round and pillow blisters. The results showed that blisters increase local flow resistance and lead to boiling at the edges of the channel, while dry out areas are located downstream of the blisters in both types of channels.

FRONTIERS IN ENERGY RESEARCH (2021)

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Article Engineering, Mechanical

A Comparison of the Thermo-Fluid Properties of Ti-6Al-4V Melt Pools Formed by Laser and Electron-Beam Powder-Bed Fusion Processes

M. Shafiqur Rahman et al.

Summary: A multiphysics-based 3D numerical model was developed to compare the thermo-fluid properties of Ti-6Al-4V melt pools formed by the L-PBF and E-PBF processes. The results showed that the L-PBF process had a faster cooling rate and higher liquid velocity in the melt pool compared to the E-PBF process under similar irradiation conditions. The numerical model was validated by comparing the simulation results with experimental results and an analytical solution for the melting of a phase-change material.

JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME (2021)

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Article Engineering, Chemical

Fluidization of elongated particles-Effect of multi-particle correlations for drag, lift, and torque in CFD-DEM

Ivan Mema et al.

Summary: This study compared the performance of multi-particle correlations and single-particle correlations in predicting particle orientation and velocity in CFD-DEM simulations of elongated particles in a fluidized bed. The results demonstrated that multi-particle correlations improve the accuracy of prediction and highlight the importance of including hydrodynamic torque.

AICHE JOURNAL (2021)

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Article Nuclear Science & Technology

Recent progress of CFD applications in PWR thermal hydraulics study and future directions

Mingjun Wang et al.

Summary: The CFD method has shown remarkable progress in its application and research in nuclear reactor engineering, including single-phase application, two-phase model development, and multi-scale and multi-physics coupling, providing more possibilities for future nuclear reactor design and thermal-hydraulics analysis.

ANNALS OF NUCLEAR ENERGY (2021)

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Review Thermodynamics

A review on numerical modelling of flashing flow with application to nuclear safety analysis

Yixiang Liao et al.

Summary: The study reviews the research progress and model development of flashing flows, focusing on the recent advancements in computational fluid dynamics simulations. Recommendations are made for further research in handling gas-liquid interface shape effects and two-phase turbulence.

APPLIED THERMAL ENGINEERING (2021)

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Article Thermodynamics

Investigation on the elimination of geyser in a cryogenic pipe by a recirculation method

Hongwei Mao et al.

Summary: This study investigates a geyser elimination approach using recirculation methods, exploring the formation mechanism and oscillation physics of liquid recirculation. It is found that the energy storage pattern inside the cryogenic pipe can be broken down by the recirculation method, effectively eliminating geysers and reducing oscillation amplitude by as much as 55% with the application of increased heat flux.

APPLIED THERMAL ENGINEERING (2021)

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Review Thermodynamics

Recent advances in condensation heat transfer in mini and micro channels: A comprehensive review

Khadije El Kadi et al.

Summary: The paper provides a comprehensive review of condensation studies in microchannels conducted in the last two decades, including experimental investigations, theoretical predictive models, and computational predictions. It presents a wide range of operating conditions, channel geometries, heat transfer fluids, research methods, and advancements in condensation heat transfer in mini and microchannels.

APPLIED THERMAL ENGINEERING (2021)

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Review Thermodynamics

A state-of-the-art review on the application of heat pipe system in data centers

Li Ling et al.

Summary: Data centers have been increasing in number and size due to the rapid development in demand for data storage, networking, and computation. A heat pipe system is considered a promising solution to reduce the energy consumption of cooling systems, with high thermal efficiency, reliability, and cost effectiveness. This study provides a systematic review of existing heat pipe systems applied in data centers, focusing on types, thermal characteristics analysis, and energy efficiency comparison.

APPLIED THERMAL ENGINEERING (2021)

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Article Engineering, Chemical

Nucleation Rate Prediction of Curcumin Particles in Microfluidic-Assisted Nanoprecipitation

Peyvand Valeh-e-Sheyda et al.

Summary: A hybrid computational model was developed to interpret the formation of curcumin particles via liquid antisolvent precipitation in three microchannel reactors with different confluence angles. The study found that the particles with the smallest diameters are observed right after the intersection of the three streams. Furthermore, the reactor with a larger confluence angle of 135 degrees exhibited higher population density due to the smaller size of the precipitated curcumin particles.

CHEMICAL ENGINEERING & TECHNOLOGY (2021)

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Article Engineering, Chemical

On-route to dryout through sequential interfacial dynamics in annular flow boiling around temperature and heat flux controlled heater rod

Liril D. Silvi et al.

Summary: This study utilizes numerical methods to investigate the dryout mechanism during flow boiling around a heated cylindrical rod under high working pressure, illustrating various mechanisms and their impacts visually.

CHEMICAL ENGINEERING SCIENCE (2021)

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Article Engineering, Multidisciplinary

Simulations of Laser Assisted Additive Manufacturing by Smoothed Particle Hydrodynamics

My Ha Dao et al.

Summary: This paper introduces a 3D SPH model with powder resolution for simulating complex LAAM processes. It considers key physical processes such as transient powder-laser interaction, melt-pool dynamics, and phase change, and has been validated to be stable and accurate for simulating complete LAAM processes. The model is demonstrated for Selective Laser Melting (SLM) and Direct Metal Deposition (DMD) simulations.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2021)

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Article Construction & Building Technology

Research on falling film dehumidification performance of microencapsulated phase change materials slurry

Dandan Wang et al.

Summary: Adding microencapsulated phase change materials (MicroPCMs) into liquid desiccant solution can improve dehumidification performance, with the inlet temperature of the microencapsulated phase change material slurry (MPCMS) being a critical variable. Corrugated plate configuration is more conducive to dehumidification enhancement by the MPCMS.

ENERGY AND BUILDINGS (2021)

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Article Construction & Building Technology

Coupled EnergyPlus and CFD analysis of PCM for thermal management of buildings

Brijesh Pandey et al.

Summary: This study aims to develop a co-simulation framework between BES tool (EnergyPlus) and CFD tool (Ansys Fluent) to model the PCM integrated built environment and compare its prediction accuracy with the most popular BES tool, i.e., EnergyPlus, showing that the proposed co-simulation has better prediction accuracy in certain scenarios.

ENERGY AND BUILDINGS (2021)

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Article Engineering, Chemical

Gas-solid-liquid reactive CFD simulation of an industrial RFCC riser with investigation of feed injection

Sheng Chen et al.

Summary: This study investigates the effects of downward feed injection on reaction behaviors through three-phase reactive simulation, finding that an appropriate injection angle and mounting position can improve the yield of gasoline and LPG while mitigating adhesion of the coking layer to the wall.

CHEMICAL ENGINEERING SCIENCE (2021)

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Article Engineering, Chemical

Scale-up effect of residence time distribution of polydisperse particles in continuously operated multiple-chamber fluidized beds

Bin Lan et al.

Summary: The study found that the pressure drop and particle residence time distribution in a laboratory scale fluidized bed can be reasonably predicted; the mean residence time of particles linearly scales with bed length under different solid feed rates; the mean residence time of particles can be inferred from CFD simulations and the mass fraction of particles at the inlet.

CHEMICAL ENGINEERING SCIENCE (2021)

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Article Engineering, Chemical

CFD-DEM modeling of filtered fluid-particle drag and heat transfer in bidisperse gas-solid flows

He Lei et al.

Summary: This work extends filtered models to investigate the influence of particle polydispersity on filtered fluid-particle drag and heat transfer behaviors in bidisperse systems. It is found that filtered corrections are indispensable in bidisperse systems, and the dependence of these corrections on particle size ratio and volume fraction ratio is identified. Additionally, the increase in small particle proportion generally leads to a reduction in drag and heat transfer corrections.

CHEMICAL ENGINEERING SCIENCE (2021)

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Article Green & Sustainable Science & Technology

Numerical investigation and experimental validation of the thermal performance enhancement of a compact finned-tube heat exchanger for efficient latent heat thermal energy storage

Mohamed El Habib Amagour et al.

Summary: This study presents a numerical investigation of heat transfer performance inside a compact finned-tube heat exchanger used in latent heat storage. The results show that adjusting operational and design parameters can significantly impact the charging and discharging performance.

JOURNAL OF CLEANER PRODUCTION (2021)

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Article Engineering, Chemical

Application of directional freezing for seawater desalination: Parametric analysis using experimental and computational methods

Khadije El Kadi et al.

Summary: Directional freezing is effective in removing impurities from ice crystals and increasing desalination efficiency. This study experimentally and numerically evaluated the desalination of surrogate seawater using directional freezing in radial and vertical directions. Results indicated that lower salinity brine, top freezing, and stirring flow contributed to improved partition and removal efficiency during the desalination process.

DESALINATION (2021)

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Article Energy & Fuels

Evaluation on Coupling of Wall Boiling and Population Balance Models for Vertical Gas-Liquid Subcooled Boiling Flow of First Loop of Nuclear Power Plant

Guang Hu et al.

Summary: The study analyzed, evaluated, and validated the interphase behaviors of vertical gas-liquid subcooled boiling flow in the first loop of a nuclear power plant. Two suitable models were proposed for the calculation, providing effective guidance for numerical computation.

ENERGIES (2021)

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Article Thermodynamics

Numerical investigation of the effect of mixing vanes on subcooled boiling in a 3 x 3 rod bundle channel with spacer grid

Peng Yang et al.

Summary: Mixing vane grids have a significant impact on the flow and heat transfer characteristics of nuclear reactor fuel components, particularly under conditions of subcooled flow boiling. The components, deflection angles, and arrangements of mixing vanes can affect the axial distribution of boiling heat transfer parameters.

ENERGY (2021)

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Article Thermodynamics

Validity evaluation of popular liquid-vapor phase change models for cryogenic self-pressurization process

Zhongqi Zuo et al.

Summary: The study proposed a unified multi-phase solver incorporating four typical liquid-vapor phase change models, enabling direct comparison of their performance against experimental data. Pressure prediction was found to highly depend on model coefficients, with different optimization strategies. The energy jump model was inadequate for cryogenic self-pressurization simulations, while the Lee model and the Tanasawa model were proven to be more stable and efficient based on average deviation and CPU consumption.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

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Article Thermodynamics

Role of melt flow dynamics on track surface morphology in the L -PBF additive manufacturing process

Arvind Chouhan et al.

Summary: Laser powder bed fusion (L-PBF) is an additive manufacturing process used to create intricate metal parts, but poor surface roughness of the fabricated parts limits its application. This study investigates the impact of melt flow dynamics on track surface morphology in L-PBF. Experimental and numerical data show good agreement, and optimization of scanning speed and laser spot radius can minimize track surface roughness.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

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Article Thermodynamics

Impact of micro-fins on a heated cylinder submerged in a nanofluid saturated medium

Mostafa Mahdavi et al.

Summary: Nanofluid pool boiling on a circular heat sink with micro-fins attached was studied numerically, with consideration of various configurations of physical micro-fins and three phases (liquid, vapour, and particles). The heat transfer was mainly affected by the fin aspect ratio, while the impact decreased with increasing nanofluid concentration. The best enhancement in heat transfer was achieved around 1% nanofluid volume fraction.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

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Article Engineering, Mechanical

Correlating the weld-bead's 'macro-, micro-features' with the weld-pool's 'fluid flow' for electron beam welded SS 201 plates

Debasish Das et al.

Summary: The study utilized phenomenological modeling using CFD to investigate the impact of fluid flow within the weld zone on bead geometry, hardness, and ferrite arm spacing during electron beam welding of SS201 plates. It was found that increasing heat input resulted in changes in fluid flow velocities and heat transfer modes.

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES (2021)

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Article Mechanics

Pool boiling simulation with two-fluid and grid resolved wall boiling model

Milan M. Petrovic et al.

Summary: This paper introduces a new grid resolved wall boiling model (GRWBM) that can better predict the wall temperature variations and bubble growth locations in nucleate boiling. Compared to the traditional subgrid wall boiling model (SWBM), the simulation results of GRWBM are more accurate.

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW (2021)

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Article Thermodynamics

Numerical study on multiple bubbles condensation in subcooled boiling flow based on CLSVOF method

Mohammad Bahreini et al.

Summary: Numerical studies were conducted to investigate the condensation behavior of single and multiple bubbles in subcooled boiling flow. The results showed that factors such as bubble size, liquid subcooling, and flow velocity significantly affect the bubble deformation behavior and condensation rate. Interaction between bubbles in multiple bubble systems led to more complex dynamic condensation behavior compared to single bubbles.

INTERNATIONAL JOURNAL OF THERMAL SCIENCES (2021)

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Article Thermodynamics

Implementation of a CFD model for wall condensation in the presence of non-condensable gas mixtures

G. Vijaya Kumar et al.

Summary: This paper discusses a CFD model for predicting vapor condensation on walls in the presence of noncondensable gases, particularly in large scale applications like nuclear reactor containments. The Face-flux model is found to be more accurate, computationally cheaper, and less grid-dependent compared to the Volumetric source terms approach. The model's predictiveness and robustness are demonstrated for forced convection flows across a wide range of cases.

APPLIED THERMAL ENGINEERING (2021)

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Article Thermodynamics

Multiphase-thermal simulation on BOG/BOR estimation due to phase change in cryogenic liquid storage tanks

Gyu-Mok Jeon et al.

Summary: This study focuses on the high-precision numerical calculation of Boil-off-Gas (BOG) and Boil-off-Rate (BOR) in cryogenic liquid tanks using high-fidelity CFD simulation. By comparing with conventional low-fidelity methods, it is concluded that the high-fidelity CFD calculation can accurately predict the vaporization of cryogenic liquid and calculate correct BOR values.

APPLIED THERMAL ENGINEERING (2021)

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Article Engineering, Chemical

Achieving sustainable operation for hypersaline membrane distillation applications: A novel strategy based on the critical Reynolds number

Guoqiang Guan et al.

Summary: Membrane distillation (MD) is a promising alternative for zero liquid discharge and brine mining, but scaling formation on the membrane surface with hypersaline solutions can interrupt operations. This study aimed to establish a thermodynamic framework to predict an operational threshold for sustainable MD performance in hypersaline processing, identifying a critical Reynolds number below which scaling formation is inevitable. Various correlations and empirical approaches were derived to widen the operational window and predict scaling-free operation, essential for sustainable operation in MD hypersaline processing.

DESALINATION (2021)

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Article Energy & Fuels

Numerical Study toward Optimization of Spray Drying in a Novel Radial Multizone Dryer

Umair Jamil Ur Rahman et al.

Summary: In this study, an intensified spray-drying process in a novel Radial Multizone Dryer (RMD) was analyzed using CFD. The effect of solids outlet location, relative hot/cold airflow ratio, and droplet size on heat and mass transfer characteristics, G-acceleration, residence time, and separation efficiency of the product was investigated. The results showed that the temperature pattern in the dryer is dependent on the solids outlet location, and the highest product separation efficiency was obtained with high G-acceleration and narrow droplet size distribution.

ENERGIES (2021)

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Article Thermodynamics

CFD-DEM simulation of air-blown gasification of biomass in a bubbling fluidized bed gasifier: Effects of equivalence ratio and fluidization number

In Sik Hwang et al.

Summary: This study numerically investigated the air-blown gasification of biomass in a BFB gasifier, revealing that an increase in FN beyond a certain value was not recommended and the optimum FN and ER values were considered as 3.56 and 0.3.

ENERGY (2021)

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Article Thermodynamics

CFD-based coupled multiphase modeling of biochar production using a large-scale pyrolysis plant

Hassan Khodaei et al.

Summary: This paper presents a combined CFD simulation study on the thermal conversion of biomass to biochar and the co-combustion of air and biomass volatiles in an industrial pyrolysis plant. The main objective is to investigate the challenges associated with biochar production and strategies to improve biochar quality.

ENERGY (2021)

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Article Thermodynamics

A novel liquid cooling plate concept for thermal management of lithium-ion batteries in electric vehicles

Mohsen Akbarzadeh et al.

Summary: This paper presents an innovative liquid cooling plate (LCP) embedded with phase change material (PCM) for thermal management of electric vehicle (EV) batteries. The hybrid LCP, combining active and passive cooling methods, is 36% lighter than traditional aluminum LCP and provides heating solution to slow temperature loss. Experimental and computational analyses show that the hybrid LCP reduces energy consumption and improves temperature uniformity, making it a promising thermal management solution for EVs.

ENERGY CONVERSION AND MANAGEMENT (2021)

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Article Thermodynamics

Investigation on Sub-models of Population Balance Model for Subcooled Boiling in Vertical Gas-liquid Flow by Comprehensive Evaluation

Guang Hu et al.

Summary: This paper provides a comprehensive evaluation of sub-models for solving the population balance model (PBM) under subcooled boiling conditions in a vertical gas-liquid flow. The detailed analysis of bubble mechanisms and various sub-models including bubble nucleation, condensation, coalescence, and breakup in high temperature and pressure applications is crucial for practical engineering. The results suggest that evaluating PBMs and selecting appropriate models is essential for successful application in engineering.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

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Article Thermodynamics

Onset of Nucleate Boiling Model for Rectangular Upward Narrow Channel: CFD Based Approach

Achref Rabhi et al.

Summary: Despite existing mechanistic correlations for ONB in pool boiling, models for forced convective boiling are limited. This study developed a new ONB model based on CFD simulations, taking into account the convective boiling features and providing accurate predictions under various operating conditions.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

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Article Nuclear Science & Technology

Numerical simulation of single-phase heat transfer and nucleate boiling of liquid sodium in narrow annulus channel similar to that of SFR fuel subchannel

Sachin Tom et al.

Summary: The study aims to develop multiphase models based on CFD for the safety analysis of the sodium cooled fast reactor using the finite volume method. Results show that the Realizable k-epsilon model with Kays correlation better predicts single-phase heat transfer characteristics under low Peclet number. Additionally, the study successfully predicted flow boiling and nucleate boiling through numerical simulations.

NUCLEAR ENGINEERING AND DESIGN (2021)

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Article Computer Science, Interdisciplinary Applications

Hybrid Modeling Approach for Melt-Pool Prediction in Laser Powder Bed Fusion Additive Manufacturing

Tesfaye Moges et al.

Summary: The study introduces a novel hybrid modeling framework that combines physics-based and data-driven models to predict melt-pool width in laser powder bed fusion processes. By integrating simulation data and measurement data, a hybrid model is developed to improve prediction accuracy.

JOURNAL OF COMPUTING AND INFORMATION SCIENCE IN ENGINEERING (2021)

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Article Nuclear Science & Technology

CFD simulation and flow-induced vibration evaluation of PWR steam generator U tubes

Xiong Guangming et al.

Summary: For the new steam generators designed for pressurized water reactors, the study focuses on the flow-induced vibration (FIV) of U tubes, with factors such as support failure, support clearance, and offset believed to significantly influence the FIV. The results indicate that the newly designed steam generator meets FIV requirements, with the maximum flowelastic instability (FEI) coefficient increasing with support failure, and turbulence buffeting stress amplitude lower than fatigue stress limit. The most significant fretting wear occurs when support clearance is near 2 times the nominal clearance, while U tube offsets help reduce fretting wear.

PROGRESS IN NUCLEAR ENERGY (2021)

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Article Nuclear Science & Technology

Multi-scale simulation of wall film condensation in the presence of non-condensable gases using heat structure-coupled CFD and system analysis codes

Chang Won Lee et al.

Summary: The study focuses on using improved programs to efficiently utilize wall condensation heat transfer for analyzing the heat transfer rate of containment cooling systems, addressing challenges in steam condensation processes.

NUCLEAR ENGINEERING AND TECHNOLOGY (2021)

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Article Thermodynamics

A simplified thermal approximation method to include the effects of Marangoni convection in the melt pools of processes that involve moving point heat sources

Sagar H. Nikam et al.

Summary: Processes utilizing moving point heat sources to create localized melt pools temporarily experience Marangoni convection due to surface tension gradient, which alters the geometry of the melt pools. While Computational Fluid Dynamics models are computationally intensive, simpler heat conduction models with artificially increased liquid thermal conductivity exhibit similar thermal effects to Marangoni convection.

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS (2021)

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Article Crystallography

Population Balance and CFD Simulation of Particle Aggregation and Growth in a Continuous Confined Jet Mixer for Hydrothermal Synthesis of Nanocrystals

Qing Yun Li et al.

Summary: Population balance and computational fluid dynamics models were built and integrated for a simulation study of reactive crystallisation process in a confined jet mixer for continuous flow synthesis of TiO2 nanoparticles in supercritical water. The combined model of nanocrystal aggregation and surface growth was found to provide a more accurate prediction of particle size distribution compared to models that only consider surface growth as the mechanism for particle size enlargement.

CRYSTALS (2021)

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Article Energy & Fuels

Comparison between two Eulerian-Lagrangian methods: CFD-DEM and MPPIC on the biomass gasification in a fluidized bed

Chunlei Li et al.

Summary: This paper compares the application of two Eulerian-Lagrangian methods, CFD-DEM and MPPIC, in simulating biomass gasification in a fluidized bed, focusing on predicting product gas composition, trajectories, and particle diameters. The results show minimal difference in predicting H-2 share between the two methods, and demonstrate that both methods exhibit similar trends in reactor-scale applications.

BIOMASS CONVERSION AND BIOREFINERY (2021)

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Article Energy & Fuels

Optimal design and sensitivity analysis of energy storage for concentrated solar power plants using phase change material by gradient metal foams

Hesam Ami Ahmadi et al.

Summary: This study proposes the use of gradient metal foams to optimize phase change materials and achieve higher efficiency in thermal energy storage units. Numerical simulations were conducted to investigate the impact of gradient porosity on the performance of TES, resulting in improvements in charging time and total entropy generation.

JOURNAL OF ENERGY STORAGE (2021)

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Article Thermodynamics

Thermal performance of honeycomb-like battery thermal management system with bionic liquid mini-channel and phase change materials for cylindrical lithium-ion battery

Wen Yang et al.

Summary: A novel honeycomb-like battery thermal management system with bionic liquid mini-channel and phase change materials is proposed to enhance the working performance of lithium-ion batteries. Computational fluid dynamics and a second-order equivalent circuit model are utilized to numerically investigate the thermal performance of the battery module. The use of a hexagonal cooling plate design, along with back propagation neural networks to estimate appropriate inlet flow rates, helps stabilize the battery module's temperature within desired limits.

APPLIED THERMAL ENGINEERING (2021)

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Article Engineering, Multidisciplinary

Semi-coupled resolved CFD-DEM simulation of powder-based selective laser melting for additive manufacturing

Tao Yu et al.

Summary: A semi-coupled resolved Computational Fluid Dynamics (CFD) and Discrete Element Method (DEM) is proposed to simulate granular media problems involving thermal-induced phase changes and particle-fluid interactions. Validated through simulations of a powder-based selective laser melting (PB-SLM) process, the method examines the effects of key SLM input parameters on melting and provides a physically based, high-fidelity computational approach for future PB-SLM additive manufacturing.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2021)

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Article Materials Science, Multidisciplinary

Mesoscopic Computational Fluid Dynamics Modelling for the Laser-Melting Deposition of AISI 304 Stainless Steel Single Tracks with Experimental Correlation: A Novel Study

Asif Ur Rehman et al.

Summary: The study developed a computational fluid dynamics model for laser-melting deposition (LMD) and found close correlation between experimental and modeling results, with a deviation of 1-3%. It was discovered that LMD involves the simultaneous addition of powder particles absorbing laser energy, resulting in conduction-mode melt flow. The study provides a comprehensive understanding of melt pool dynamics and flow pattern in LMD additive manufacturing technique.

METALS (2021)

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Article Energy & Fuels

Nox formation in fixed-bed biomass combustion: Chemistry and modeling

Wenchao Ma et al.

Summary: The renewable and carbon neutral nature of biomass makes it a clean energy alternative, but NOx emission during biomass combustion is a serious environmental concern. The study presents a computational fluid dynamics model (BASIC) that combines nitrogen chemistry with flow and combustion simulations to understand and minimize NOx and nitrous oxide emissions. Results show that factors such as particle size and initial temperature significantly impact NO and N2O formation pathways during biomass combustion.

FUEL (2021)

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Article Engineering, Chemical

CFD-Based Computational Studies of Quantum Dot Size Control in Slug Flow Crystallizers: Handling Slug-to-Slug Variation

Niranjan Sitapure et al.

Summary: The study introduced slug-flow crystallizers for the manufacturing of colloidal quantum dots, but faced challenges with wide crystal size distribution. By integrating a computational fluid dynamics model with a slug crystallizer model, they developed an optimal operation problem to track QD size and achieve a narrow CSD distribution.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2021)

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Article Thermodynamics

Development of a general correlation for free convection vapor condensation over a horizontal tube in the presence of a noncondensable gas

A. Dehbi

Summary: In this study, a general correlation applicable to various conditions was developed and validated. The resulting data from hundreds of CFD simulations were used to create a compact correlation that is in good agreement with empirical correlations in the literature.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2021)

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Article Thermodynamics

Assessing advantages and disadvantages of macro- and micro-channel flow boiling for high-heat-flux thermal management using computational and theoretical/empirical methods

V.S. Devahdhanush et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

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Article Thermodynamics

Mass transfer enhancement of falling film liquid desiccant dehumidification by micro-baffle plates

Hao Lu et al.

Summary: The study investigated the influence of baffle plates on the dehumidification performance of falling film liquid desiccant dehumidifiers, showing significant improvement in efficiency with the use of baffle plates due to liquid film waves, flow eddies, and high-value TKE distribution. In practical applications, higher baffle height and smaller baffle spacing lead to more significant enhancement effects.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

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Article Thermodynamics

Radiant heating floors with PCM bands for thermal energy storage: A numerical analysis

B. Gonzalez et al.

Summary: Radiant heating floors with PCMs offer a promising approach to improve energy efficiency in buildings by increasing thermal energy storage and reducing heat flux. The results of the study demonstrate the potential for PCM radiant floors to enhance comfort levels and save energy in practical applications.

INTERNATIONAL JOURNAL OF THERMAL SCIENCES (2021)

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Article Thermodynamics

Heat Transfer Characteristics of a Train of Droplets Impinging Over a Hot Surface: From Film Evaporation to Leidenfrost Point

Ganesh Guggilla et al.

Summary: This study focuses on a train of two FC-72 droplets impinging over a heated surface, utilizing a combination of experimental investigation and numerical simulations. The importance of contact angle hysteresis is emphasized, and the spreading hydrodynamics and heat transfer characteristics of the droplets are studied.

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME (2021)

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Article Engineering, Manufacturing

Multiscale simulation of rapid solidification of an aluminium-silicon alloy under additive manufacturing conditions

Patrick O'Toole et al.

Summary: Current multiscale simulation approaches for selective laser melting often make assumptions of equilibrium freezing range and steady state solidification conditions, leading to inaccurate predictions of temperature evolution and microstructure formation. Strategies need to be developed to accurately predict solidification behavior in additive manufacturing processes for materials with rapid solidification under large thermal undercooling.

ADDITIVE MANUFACTURING (2021)

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Article Energy & Fuels

Intelligent optimization of horizontal fins to improve the melting performance of phase change materials in a square cavity with isothermal vertical wall

Yang Xu et al.

Summary: A new combination mode of genetic algorithm and computational fluid dynamics is proposed to optimize fins for solid-liquid phase change heat transfer enhancement. The study suggests that longer and uniformly arranged fins are optimal, and the presence of natural convection can improve melting time and thermal energy storage rate.

JOURNAL OF ENERGY STORAGE (2021)

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Article Energy & Fuels

Hybrid thermal performance enhancement of shell and tube latent heat thermal energy storage using nano-additives and metal foam

Khaoula Nedjem et al.

Summary: The study focuses on the impact of metal foam and nanoparticle additives on the thermal performance of phase change materials in shell-and-tube heat exchangers, showing that they significantly improve thermal efficiency and reduce charging/discharging times.

JOURNAL OF ENERGY STORAGE (2021)

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Article Energy & Fuels

Melting and solidification characteristics of cylindrical encapsulated phase change materials

Mohammad Yaseen Shaker et al.

Summary: The study used experimental and CFD models to investigate the parameters influencing the melting and solidification characteristics of EPCM, finding that increasing HTF flow rate can reduce the melting time of lauric acid and paraffin wax, with paraffin wax storing much more energy than lauric acid under the same HTF conditions. Additionally, increasing the number of internal fins in the capsules significantly enhances the melting time of paraffin wax.

JOURNAL OF ENERGY STORAGE (2021)

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Article Energy & Fuels

Thermal performance investigation of door opening and closing processes in a refrigerated truck equipped with different phase change materials

M. A. Ben Taher et al.

Summary: The study aims to evaluate the aerothermal behavior of a refrigerated truck with different phase change materials in two configurations (door open/closed) throughout its operating cycle. The results show that integrating a PCM can significantly reduce cooling capacity when the truck door is open, leading to energy savings and reduced greenhouse gas emissions.

JOURNAL OF ENERGY STORAGE (2021)

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Article Thermodynamics

Numerical investigation and modeling of thermal resistance and effective thermal conductivity for two-phase thermosyphon

Myeongjin Kim et al.

Summary: This study investigates the heat transfer characteristics of a two-phase thermosyphon under different conditions using computational fluid dynamics, and reveals that thermal resistance decreases with increasing water amount, heat pipe diameter, and heater power.

CASE STUDIES IN THERMAL ENGINEERING (2021)

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Article Engineering, Environmental

Numerical simulation of LNG tanks exposed to fire

Tommaso Iannaccone et al.

Summary: The study developed a two-dimensional non-equilibrium computational fluid dynamics model for understanding the behavior of LNG tanks exposed to fire, providing support for safety assessment and design of safety systems.

PROCESS SAFETY AND ENVIRONMENTAL PROTECTION (2021)

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Article Nuclear Science & Technology

Numerical investigation of the CHF in a vertical round tube and a single rod channel based on the eulerian two-fluid model

Wei Liu et al.

Summary: This study used a commercial computational fluid dynamics package to predict the DNB phenomenon, and the results demonstrated that the Eulerian two-fluid model had a good application prospect for CHF prediction.

PROGRESS IN NUCLEAR ENERGY (2021)

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Article Engineering, Manufacturing

CFD modelling of ultra-high rotational speed micro friction stir welding

Renju Mohan et al.

Summary: This study focuses on ultra-high rotational speed micro friction stir welding, investigating the heat generation, temperature distribution, and material flow during the welding process through numerical simulations. The findings reveal that at high rotational speeds, plastic heat generation plays a more significant role, while partial melting does not occur.

JOURNAL OF MANUFACTURING PROCESSES (2021)

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Article Energy & Fuels

Enhancing the insulation capability of a vaccine carrier box: An engineering approach

Shitanshu Devrani et al.

Summary: This study focuses on improving the design of vaccine cold chain carriers, with experiments and simulations showing a significant improvement in insulation and temperature retention for the new design compared to the conventional one.

JOURNAL OF ENERGY STORAGE (2021)

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Review Energy & Fuels

Review on numerical algorithms for melting and solidification studies and their implementation in general purpose computational fluid dynamic software

S. Arun Prakash et al.

Summary: This article reviews the development of numerical algorithms for solidification and melting in the application of phase change materials, emphasizing the importance of using appropriate algorithms for accurate and stable solutions. Errors and stability issues of the numerical schemes for melting and solidification are discussed in this review work.

JOURNAL OF ENERGY STORAGE (2021)

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Review Nuclear Science & Technology

A mini-review on population balance model for gas-liquid subcooled boiling flow in nuclear industry

Guang Hu et al.

Summary: The application of the population balance model (PBM) in the gas-liquid subcooled boiling flow has gained interest in the nuclear industry. This study systematically reviews theoretical models, experimental work, numerical applications, and new findings under the Eulerian-Eulerian (EE) approach coupled with PBM. The study covers the comprehensive sub-models of PBM, typical experimental developments, and simulation results using different solving models in the gas-liquid subcooled boiling flow condition.

ANNALS OF NUCLEAR ENERGY (2021)

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Article Thermodynamics

A numerical model for liquid-vapor transition in self-pressurized cryogenic containers

Zhongqi Zuo et al.

Summary: This paper introduces an optimized computational model for faster and more accurate simulation of the self-pressurization process in cryogenic storage tanks, achieving a tenfold improvement in calculation speed without compromising accuracy. An optimal region for evaporation and condensation coefficients was identified and adjustments were made, confirming the overestimation issue of the common constant heat flux boundary.

APPLIED THERMAL ENGINEERING (2021)

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Article Thermodynamics

Performance analysis of phase change material in battery thermal management with biomimetic honeycomb fin

Fen Liu et al.

Summary: The study investigates the impact of honeycomb fins on battery temperature, finding that they can effectively reduce the temperature and improve melting efficiency. Optimal values for porosity, cooling plate thickness, and number of holes are suggested.

APPLIED THERMAL ENGINEERING (2021)

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Article Thermodynamics

Enhanced heat transfer in a PCM shell-and-tube thermal energy storage system

Jerzy Woloszyn et al.

Summary: A new double tube latent heat thermal energy storage unit was proposed in this study, which significantly reduces melting time of phase change materials. Different design solutions have varying exergy efficiencies in this system.

APPLIED THERMAL ENGINEERING (2021)

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Article Thermodynamics

Numerical analysis of the performance enhancement of a latent heat storage shell and tube unit using finned tubes during melting and solidification

Mohamed Amine Dekhil et al.

Summary: The study analyzed the melting and solidification processes in three horizontal storage units for Latent Heat Thermal Storage using water as phase change material and a water/glycol solution as the Heat Transfer Fluid. Different configurations were compared to improve thermal performance, with the addition of fins significantly increasing solidification and melting rates, especially in the configuration with longitudinal fins.

APPLIED THERMAL ENGINEERING (2021)

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Article Engineering, Chemical

Numerical investigation on deposition rate of mechanically mixed ash particles in an entrained flow reactor

Yibin Wang et al.

Summary: The condensation rate of salt vapors near the superheater or reheater tubes greatly affects the deposition rate of SiO2 particles. The impact and adhesion behavior of solid and molten particles are mainly influenced by the condensation of salt vapors.

ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING (2021)

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Review Energy & Fuels

Process intensification in micro-fluidized bed systems: A review

Yi Zhang et al.

Summary: Micro-fluidized bed (MFB) is a novel technology with good mixing and high mass/heat transfer capabilities for engineering processing and screening applications. However, challenges such as low fluidization quality and limited scalability remain. Evaluation of recent progress and comparison with other reactors have provided insights into the potential of MFB for process intensification.

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION (2021)

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Article Engineering, Chemical

Investigation of a GL-EMMS gradual drag model by comparative simulations of bubble columns

Yunpeng Jiao et al.

Summary: The study introduced a gradual drag correlation based on the GL-EMMS model, successfully integrated into the E-E and E-L frameworks. A simplified meshing treatment at the inlet boundary effectively reduced the computing load. The E-E simulation predicted the total gas holdup and the radial distribution of liquid velocity well, with some noticeable deviations observed in certain cases.

CHEMICAL ENGINEERING RESEARCH & DESIGN (2021)

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Article Energy & Fuels

Holistic 1D Electro-Thermal Model Coupled to 3D Thermal Model for Hybrid Passive Cooling System Analysis in Electric Vehicles

Danial Karimi et al.

Summary: This study proposes a novel passive thermal management system composed of a heat sink and phase change materials for controlling the temperature of lithium-ion capacitors under fast charge/discharge rates. The robustness of the system is validated through an electro-thermal model and numerical analysis, and results show that using the PCM-HS cooling system can significantly reduce the temperature of LiC.

ENERGIES (2021)

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Article Energy & Fuels

Numerical Simulation of a Novel Dual Layered Phase Change Material Brick Wall for Human Comfort in Hot and Cold Climatic Conditions

Atiq Ur Rehman et al.

Summary: This study proposed a novel dual-layer PCM configuration for brick walls to maintain human comfort in hot and cold climatic conditions in Islamabad, Pakistan. Numerical simulations showed that the combined use of dual PCMs provides better human comfort with reduced energy requirements throughout the year compared to using a single PCM for either summer or winter alone.

ENERGIES (2021)

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Article Energy & Fuels

The Thermal-Flow Processes and Flow Pattern in a Pulsating Heat Pipe-Numerical Modelling and Experimental Validation

Przemyslaw Blasiak et al.

Summary: This article aims to numerically model a two-dimensional multiphase flow in a pulsating heat pipe using the volume of fluid method (VOF) within the open source software OpenFOAM. The influence of different mass transfer models on flow structures was analyzed and validated against experimental data.

ENERGIES (2021)

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Article Energy & Fuels

CFD analysis of biomass steam gasification in fluidized bed gasifier: A parametric study by the assessment of drying stage

Husam Al-Qadasi et al.

Summary: This study utilized a detailed pyrolysis chemical reaction model and a novel multi-phase CFD model to investigate the gasification process of biomass in a fluidized bed gasifier using almond shells as feedstock. Increasing gasification temperature and steam-to-biomass ratio enhances the production of H-2 and CO, while decreasing the lower heating value of the produced gas.

ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS (2021)

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Article Energy & Fuels

Modelling fuel flexibility in fixed-bed biomass conversion with a low primary air ratio in an updraft configuration

Andres Anca-Couce et al.

Summary: Fixed-bed biomass conversion with low primary air ratio and counter-current configuration shows potential for emission reduction and high feedstock flexibility. The validated 1D bed model accurately predicts temperatures and gas composition, while also investigating fuel flexibility in different scenarios.

FUEL (2021)

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Article Engineering, Chemical

CFD-PBE Model and Simulation of Continuous Antisolvent Crystallization in an Impinging Jet Crystallizer with a Multiorifice at Different Positions

Mingyu Chen et al.

Summary: In this study, a comprehensive model combining CFD and the population balance equation (PBE) was utilized to simulate the paracetamol continuous antisolvent crystallization process. A multi-orifice impinging jet crystallizer was designed and studied in detail, with analysis on the effects of different operating conditions on mixing and crystallization. The results obtained can be used to aid in the design and optimization of such crystallizers.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2021)

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Article Automation & Control Systems

Numerical simulation for electron beam selective melting PBF additive manufacturing of molybdenum

Muhammad Qasim Zafar et al.

Summary: This paper presents EBSM numerical process simulation for molybdenum on macro- and mesoscale established with exclusive powder material modeling. Experimentally determined process parameters are implemented in 3D macro- and 2D mesoscale models for a profound process insight. The results proved the effectiveness of the numerical simulation for detailed EBSM process understanding for molybdenum material.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2021)

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Article Energy & Fuels

Thermal performance of an accumulator unit using phase change material with a fixed volume of fins

Ahmed E. Amer et al.

Summary: This study numerically investigated the enhancement of melting rate inside an accumulator unit for a phase change material using circular fins in a shell-and-tube arrangement. It was found that the optimal number and parameters of fins can maximize the thermal performance of the selected accumulator unit. Additionally, the study concluded that variations in heat transfer fluid flow rate and inlet temperature significantly affect the melting rate of the phase change material.

INTERNATIONAL JOURNAL OF ENERGY RESEARCH (2021)

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Article Thermodynamics

The effect of surface wettability on flow boiling characteristics within microchannels

Konstantinos Vontas et al.

Summary: This paper conducts an advanced numerical investigation on the effect of surface wettability characteristics on bubble growth within microchannels. The results demonstrate a significant impact of surface wettability on heat transfer coefficients, with hydrophilic and hydrophobic surfaces outperforming single-phase reference simulations by approximately 43.9% and 17.8% respectively.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

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Article Thermodynamics

CFD modelling of the isobaric evaporation of cryogenic liquids in storage tanks

Felipe Huerta et al.

Summary: The newly developed CFD model accurately predicts the dynamics of isobaric cryogen evaporation and weathering in storage tanks, providing detailed velocity and temperature profiles. Simulation results indicate that the complex flow established in the vapor phase can be adequately modeled by effective advective upward flow for modeling heat transfer, steady-state vapor temperature, and boil-off gas rate.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

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Article Nuclear Science & Technology

Study of nuclear reactor external vessel passive cooling using computational fluid dynamics

Marco Colombo et al.

Summary: Nuclear energy has regained support as a reliable source of carbon-free electricity, but questions remain about the safety of nuclear plants, especially after the Fukushima disaster. Research on passive safety systems for cooling reactors has been accelerated, but the assessment of their effectiveness is hindered by the challenges of large spatial scales and complex mathematical modelling. Experiments using computational fluid dynamics (CFD) to simulate cooling of reactor vessels show the need for more advanced models, with potential for improved accuracy through the use of large eddy simulation (LES).

NUCLEAR ENGINEERING AND DESIGN (2021)

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Article Nuclear Science & Technology

Indirect validation of fluid-to-fluid scaling criteria for modeling steam condensation based on empirical correlations and CFD simulations

Khalid Khasawneh et al.

Summary: This paper introduces a fluid-to-fluid scaling method to model high-pressure steam condensation experiments, and validates the feasibility and reasonableness of this method.

NUCLEAR ENGINEERING AND DESIGN (2021)

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Article Thermodynamics

Coupled two-fluid flow and wall heat conduction modeling of nucleate pool boiling

Milan M. Petrovic et al.

Summary: A new CFD modeling approach is developed for a numerical study of pool boiling, which involves solving the two-fluid model of two-phase flow in the boiling pool and the transient heat conduction within the heated wall simultaneously. The model is validated against experimental data and is sensitive to input parameters describing fluid-wall interface characteristics.

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS (2021)

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Article Thermodynamics

Simulation and analysis of heat dissipation performance of power battery based on phase change material enhanced heat transfer variable fin structure

Zhifeng Chen et al.

Summary: The study investigates the impact of high thermal conductivity fins on phase change materials, finding that oblique-oblique fins can effectively reduce the maximum temperature of power batteries. Aluminum is identified as the best material for fins, and a higher convection coefficient value leads to better heat dissipation performance.

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS (2021)

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Article Energy & Fuels

The thermal potential of a new multifunctional sliding window

Mostafa M. S. Ahmed et al.

Summary: This article numerically tested the thermal performance of a new design of multifunctional glazed window combining the most recent technologies used in building envelopes, showing that the window with air gap containing PV, PCM, and VG is the optimal design for indoor air's thermal isolation. In hot arid regions like Cairo, PCM with a melting point of 35°C and a thickness of 50 mm performs the best during summer, generating a maximum electrical power intensity of 162 W/m2 under received solar radiation of 1000 W/m2.

SOLAR ENERGY (2021)

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Article Materials Science, Multidisciplinary

Computational Fluid Dynamics (CFD) Simulation of Inclusion Motion under Interfacial Tension in a Flash Welding Process

Md Irfanul Haque Siddiqui et al.

Summary: The motion behavior of non-metallic inclusion particles in a solidifying weld pool is influenced by various factors such as upsetting rate and interfacial tension. The upsetting setting parameters have a substantial effect on the overall non-metallic inclusion motion, impacting the distribution and movement of inclusions in joint areas. Additionally, the interfacial tension between the inclusions and the molten steel plays a significant role in controlling the pushing and engulfment of inclusions at the solid-liquid interface.

METALS (2021)

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Article Energy & Fuels

Assessment of a heat storage system within an indirect solar dryer to improve the efficiency and the dynamic behavior

Dounia Chaatouf et al.

Summary: The study investigated the development and performance analysis of an indirect solar dryer, including the impact of heat storage system and different phase change materials. A new concept of dryer efficiency was introduced based on the required drying temperature. The results showed that the solar dryer with heat storage system improved efficiency at night.

JOURNAL OF ENERGY STORAGE (2021)

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Article Engineering, Multidisciplinary

Investigation of biomass powder as a direct solid biofuel in combustion engines: Modelling assessment and comparisons

Ashraf Elfasakhany

Summary: The study investigates the use of powder biofuel as a direct solid fuel in internal combustion engine, examining different mathematical models to simulate the combustion process. Results show that all models reasonably represent the combustion of biomass powder, with some models being more cost-effective and time-efficient. Additionally, the study reveals that the biomass powder gasification is completed at a specific temperature.

AIN SHAMS ENGINEERING JOURNAL (2021)

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Proceedings Paper Green & Sustainable Science & Technology

Numerical Investigation on the Effects of Gas Induction Velocity on the Performance of a Fluidized Bed Reactor

Mariam Yehia et al.

Summary: This study investigates the numerical model for pinewood gasification under different gas induction velocities, aiming to predict the product gas composition and assess the reactor performance. The results show that increasing the gas inlet velocity leads to higher carbon monoxide and methane yields, while decreasing hydrogen and carbon dioxide yields. The study also observes that the overall trends in product gas composition with increasing gas velocity are similar to those with decreasing steam to biomass ratio found in previous literature.

10TH IEEE INTERNATIONAL CONFERENCE ON RENEWABLE ENERGY RESEARCH AND APPLICATIONS (ICRERA 2021) (2021)

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Article Engineering, Aerospace

An Unsteady Model for Aircraft Icing Based on Tightly-Coupled Method and Phase-Field Method

Hao Dai et al.

Summary: An unsteady tightly-coupled icing model was established in this paper to solve the numerical simulation problem of unsteady aircraft icing. The model proved effective in predicting the droplet impact characteristics and shadow zones, with ice shapes that were found to be the most consistent with experiments compared to other icing models. In the icing comparison conditions presented, the model showed a prediction accuracy of up to 35% higher than LEWICE for ice thickness at the stagnation point of the leading edge.

AEROSPACE (2021)

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Proceedings Paper Materials Science, Multidisciplinary

CFD simulation for heat transfer enhancement in phase change materials

Sachin Rana et al.

Summary: In this research, a 2D CFD approach was used to analyze heat transfer in PCM. The study focused on optimizing the geometry of rectangular tubes to enhance heat transfer and reduce PCM's melting time. Fins were found to increase heat transfer to PCM and reduce melting time.

MATERIALS TODAY-PROCEEDINGS (2021)

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Proceedings Paper Thermodynamics

Thermal cooling of electronics using hybrid nanoparticles dispersed PCM based finned heat sink

Adeel Arshad et al.

Summary: The study showed that adding hybrid nanoparticles to the composite phase change material can improve the thermal conductivity and uniformity of the melting process, with a volume fraction of 0.02 GNP-Cu showing the best melting time and heat transfer rate. The plate-pin heat sink was found to lower the base temperature, helping to maintain electronic devices within a comfortable operating temperature range.

PROCEEDINGS OF THE TWENTIETH INTERSOCIETY CONFERENCE ON THERMAL AND THERMOMECHANICAL PHENOMENA IN ELECTRONIC SYSTEMS (ITHERM 2021) (2021)

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Proceedings Paper Materials Science, Multidisciplinary

Computational fluid dynamics based analysis for optimization of various thermal enhancement techniques used in evacuated tubes solar collectors: A review

Sorabh Aggarwal et al.

Summary: This article discusses various techniques used to enhance the efficiency of Evacuated Tube Solar Collectors (ETSCs), including parameters optimization such as tube length, tube radius, number of tubes, heat pipe geometry, and the shape of the evacuated tube. It also explores the influence of nano-fluids and different phase-changing materials on the efficiency of ETSCs.

MATERIALS TODAY-PROCEEDINGS (2021)

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Proceedings Paper Materials Science, Multidisciplinary

A review on the simulation/CFD based studies on the thermal augmentation of flat plate solar collectors

Abhishek Thakur et al.

Summary: The article provides an overview of research on flat plate solar collectors, highlighting key factors and methods for improving efficiency and thermal performance, as well as suggesting future research directions in the field.

MATERIALS TODAY-PROCEEDINGS (2021)

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Article Multidisciplinary Sciences

Numerical Simulations and Experimental Validation on LBW Bead Profiles of Ti-6Al-4V Alloy

Harish Mooli et al.

Summary: This paper discusses the use of Computational Fluid Dynamics (CFD) models for three-dimensional thermo-fluid analysis to improve the welding quality of titanium alloys. Through validation with existing test data and experiments, the study confirms the accuracy of modeling and simulations.

PERTANIKA JOURNAL OF SCIENCE AND TECHNOLOGY (2021)

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Proceedings Paper Engineering, Mechanical

Parametric Study of Two-phase Flow in a Porous Wick of a Mechanically Pumped Loop Heat Pipe

Md Shujan Ali et al.

Summary: Loop heat pipes are passive thermal management systems used in various fields, utilizing capillary forces for coolant circulation. This research focuses on the heat transfer effects and fluid flow patterns inside the porous wick.

PROCEEDINGS OF THE 13TH INTERNATIONAL CONFERENCE ON MECHANICAL ENGINEERING (ICME2019) (2021)

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Proceedings Paper Materials Science, Multidisciplinary

Transient numerical analysis on the melting characteristics of Paraffin and D-mannitol phase change materials for latent thermal energy storage

S. Karthikeyan et al.

Summary: Solar energy is a widely-used alternative energy source, but its effectiveness is hindered by the lack of proper energy storage systems. Recent research has focused on thermal energy storage systems using Phase Change Materials (PCMs), with studies verifying the efficiency of PCMs through simulation with computational fluid dynamics software.

MATERIALS TODAY-PROCEEDINGS (2021)

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Article Green & Sustainable Science & Technology

The effect of aspect ratio on PCM melting behaviour in rectangular enclosure

F. A. Hamad et al.

Summary: The study found a clear effect of the aspect ratio on the melting percentage of PCM. The circulation velocity decreases to low values after natural circulation starts at the hot wall.

INTERNATIONAL JOURNAL OF SUSTAINABLE ENGINEERING (2021)

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Article Thermodynamics

Assessment of heat transfer and flow characteristics of a two-phase closed thermosiphon

Israa S. Ahmed et al.

Summary: The thermal performance of an enclosed thermosiphon was investigated through comprehensive modeling and simulations using CFD. It was found that performance could be improved by adjusting the tilt angle and fill ratio, and optimal performance was achieved at specific conditions of power input, tilt angle, and fill ratio. The CFD simulations effectively predicted the formation of two-phase flow pattern and boiling and condensation zones, termed as geyser boiling.

HEAT TRANSFER (2021)

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Article Materials Science, Multidisciplinary

Numerical Investigation on Molten Pool Dynamics During Multi-laser Array Powder Bed Fusion Process

Liu Cao

Summary: MLA-PBF technology offers advantages such as accelerated production efficiency and reduced technical complexity, but lacks simulation studies at the mesoscopic scale. This research proposes optimization methods for both single-line and multi-line modes to achieve higher forming efficiency and fewer defects.

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE (2021)

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Review Engineering, Chemical

Drying efficiency and product quality of biomass drying: a review

Junpeng Yi et al.

DRYING TECHNOLOGY (2020)

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Article Thermodynamics

Effect of initial parameter on thermodynamic performance in a liquid oxygen tank with pressurized helium gas

Zhan Liu et al.

SCIENCE AND TECHNOLOGY FOR THE BUILT ENVIRONMENT (2020)

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Article Thermodynamics

Numerical analysis of sinusoidal and step pulse velocity effects on an impinging jet quenching process

Hesam Ramezanzadeh et al.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY (2020)

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Article Nuclear Science & Technology

CFD study on mechanisms of fission gas burst release from defective fuel rods of a typical PWR

Bing Dong et al.

ANNALS OF NUCLEAR ENERGY (2020)

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Article Energy & Fuels

Improving the energy discharging performance of a latent heat storage (LHS) unit using fractal-tree-shaped fins

Chengbin Zhang et al.

APPLIED ENERGY (2020)

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Article Energy & Fuels

Dynamical and thermal property of rising bubbles in the bubbling fluidized biomass gasifier with wide particle size distribution

Shiliang Yang et al.

APPLIED ENERGY (2020)

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Article Engineering, Multidisciplinary

A new ray tracing heat source model for mesoscale CFD simulation of selective laser melting (SLM)

Binqi Liu et al.

APPLIED MATHEMATICAL MODELLING (2020)

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Article Mechanics

Coupling of volume of fluid and level set methods in condensing heat transfer simulations

R. Kahraman et al.

INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS (2020)

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Article Energy & Fuels

The Thermal Stratification Evaluation of Phase-Change Materials in a Heat Storage Tank: Computational Fluid Dynamics and Experimental Study

Zilong Wang et al.

JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME (2020)

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Review Thermodynamics

Review on numerical simulations for nano-enhanced phase change material (NEPCM) phase change process

M. A. M. Irwan et al.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY (2020)

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Article Engineering, Chemical

Extended validation and verification of XPS/AVL-Fire™, a computational CFD-DEM software platform

T. Forgber et al.

POWDER TECHNOLOGY (2020)

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Article Green & Sustainable Science & Technology

Sensitivity analysis of homogeneous reactions for thermochemical conversion of biomass in a downdraft gasifier

Umesh Kumar et al.

RENEWABLE ENERGY (2020)

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Development of pressure-based phase change model for CFD modelling of heat pipes

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INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2019)

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A new drag force and heat transfer correlation derived from direct numerical LBM-simulations of flown through particle packings

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POWDER TECHNOLOGY (2019)

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Modeling of Spray Cooling with a Moving Steel Slab during the Continuous Casting Process

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STEEL RESEARCH INTERNATIONAL (2019)

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Two-phase pressurized thermal shock analysis with CFD including the effects of free-surface condensation

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NUCLEAR ENGINEERING AND DESIGN (2019)

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Particle scale modelling of porosity formation during selective laser melting process using a coupled DEM - CFD approach

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JOINT 5TH INTERNATIONAL CONFERENCE ON ADVANCES IN SOLIDIFICATION PROCESSES (ICASP-5) & 5TH INTERNATIONAL SYMPOSIUM ON CUTTING EDGE OF COMPUTER SIMULATION OF SOLIDIFICATION, CASTING AND REFINING (CSSCR-5) (2019)

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SIMULATION OF THE GAS AND LIQUID BEHAVIOR IN A LIQUID HYDROGEN TANK WITH A STRAIGHT PIPE INJECTOR DURING PRESSURIZATION

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INTERFACIAL PHENOMENA AND HEAT TRANSFER (2019)

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Computational Fluid Dynamics Modeling of Flow Boiling in Microchannels With Nonuniform Heat Flux

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Numerical investigation of subcooled flow boiling in an annulus under the influence of eccentricity

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A CFD-based comparative analysis of drying in various single biomass particles

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Effect of nucleation bubble departure diameter and frequency on modeling subcooled flow boiling in an annular flow

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CFD simulation on the heat transfer and flow characteristics of a microchannel separate heat pipe under different filling ratios

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Performance optimization of a two-phase closed thermosyphon through CFD numerical simulations

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Investigations on the influence of nozzle arrangement on the pre-cooling effect for the natural draft dry cooling tower

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CFD-PBE-PBE SIMULATION OF AN AIRLIFT LOOP CRYSTALLIZER

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CFD Simulation of a Drowning-out Crystallizer for Hexanitrohexaazaisowurtzitane

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CFD-DEM modelling of circulation frequencies and residence times in a prismatic spouted bed

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Validation of two-phase CFD models for propellant tank self-pressurization: Crossing fluid types, scales, and gravity levels

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Effect of Mixing on the Particle Size Distribution of Paracetamol Continuous Cooling Crystallization Products Using a Computational Fluid Dynamics-Population Balance Equation Simulation

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CRYSTAL GROWTH & DESIGN (2018)

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Numerical simulation and experimental validation of oil shale drying in pneumatic conveying dryer

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Numerical investigation of indirect freeze desalination using an ice maker machine

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An Eulerian model for the simulation of the thermal conversion of a single large biomass particle

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FUEL (2018)

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Efficient diagnosis of grate-fired biomass boilers by a simplified CFD-based approach

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Numerical simulation and experimental investigation on spray cooling in the non-boiling region

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HEAT AND MASS TRANSFER (2018)

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Multiscale Modeling and Simulation of Macromixing, Micromixing, and Crystal Size Distribution in Radial Mixers/Crystallizers

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Numerical investigation on the effects of steam and water parameters on steam jet condensation through a double-hole nozzle

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Pool boiling simulation using an interface tracking method: From nucleate boiling to film boiling regime through critical heat flux

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Numerical investigation into the evaporation dynamics of drop-on-drop collisions over heated wetting surfaces

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A combined CFD/visualization investigation of heat transfer behaviors during geyser boiling in two-phase closed thermosyphon

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INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2018)

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Numerical and experimental investigation of pool boiling on a vertical tube in a confined space

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An implicit algorithm for melting and settling of phase change material inside macrocapsules

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Numerical investigation into the inclination effect on conjugate pool boiling and the condensation of steam in a passive heat removal system

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Eulerian multiphase analysis for heat transfer enhancement by CO2 sublimation in slot jet impingement

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Continuous synthesis of nano-drug particles by antisolvent crystallization using a porous hollow-fiber membrane module

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Computational Fluid Dynamics Modeling of Flashing Flow in Convergent-Divergent Nozzle

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Study on the role of recondensation flux in high power laser welding by computational fluid dynamics simulations

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Simulation of wall film condensation with non-condensable gases using wall function approach in component thermal hydraulic analysis code CUPID

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Numerical study of CaCO3 scaling in submerged vacuum membrane distillation and crystallization (VMDC)

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A review of sub-channel thermal hydraulic codes for nuclear reactor core and future directions

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CFD simulation of spray cooling in the model containment THAI

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Numerical study of liquid nitrogen cavitating flow through nozzles of various shapes

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CRYOGENICS (2018)

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openCrys: Open-Source Software for the Multiscale Modeling of Combined Antisolvent and Cooling Crystallization in Turbulent Flow

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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2018)

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Particle Scale Modelling of Selective Laser Melting-Based Additive Manufacturing Process Using Open-Source CFD Code OpenFOAM

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TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS (2018)

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Free cooling using phase change material for buildings in hot-arid climate

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INTERNATIONAL JOURNAL OF LOW-CARBON TECHNOLOGIES (2018)

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A numerical and experimental investigation of convective heat transfer during laser-powder bed fusion

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Numerical Investigation of the Effect of Grids and Turbulence Models on Critical Heat Flux in a Vertical Pipe

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FRONTIERS IN ENERGY RESEARCH (2018)

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Heat transfer and fluid flow analysis of self-healing in metallic materials

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FUEL PROCESSING TECHNOLOGY (2017)

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Important Analysis of Liquid Vaporization Modeling Scheme in Computational Fluid Dynamics Modeling of Gas Liquid Solid Polyethylene Fluidized Bed Reactors

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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2017)

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Review of computational studies on boiling and condensation

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INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2017)

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Dispersed Two-Phase Flow Modelling for Nuclear Safety in the NEPTUNE_CFD Code

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SCIENCE AND TECHNOLOGY OF NUCLEAR INSTALLATIONS (2017)

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Investigation of PCM-assisted heat pipe for electronic cooling

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Self-healing using metallic material systems - A review

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APPLIED MATERIALS TODAY (2017)

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Pseudo-turbulent heat flux and average gas-phase conduction during gas-solid heat transfer: flow past random fixed particle assemblies

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An integrated approach to steam condensation studies inside reactor containments: A review

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On fluid-particle dynamics in fully developed cluster-induced turbulence

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JOURNAL OF FLUID MECHANICS (2015)

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Filtered and Heterogeneity-Based Subgrid Modifications for Gas-Solid Drag and Solid Stresses in Bubbling Fluidized Beds

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AICHE JOURNAL (2014)

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Direct numerical simulation of fluid flow accompanied by coupled mass and heat transfer in dense fluid-particle systems

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On multiphase turbulence models for collisional fluid-particle flows

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JOURNAL OF FLUID MECHANICS (2014)

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Volume of fluid-based numerical modeling of condensation heat transfer and fluid flow characteristics in microchannels

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INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2013)

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Review Nanoscience & Nanotechnology

Numerical modeling of multiphase flows in microfluidics and micro process engineering: a review of methods and applications

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MICROFLUIDICS AND NANOFLUIDICS (2012)

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Drag law for monodisperse gas-solid systems using particle-resolved direct numerical simulation of flow past fixed assemblies of spheres

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Modeling the evaporation of a hydrocarbon feedstock in the convection section of a steam cracker

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COMPUTERS & CHEMICAL ENGINEERING (2009)

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An equation of motion for particles of finite Reynolds number and size

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Finite element modeling of the transient heat conduction between colliding particles

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Evaporation model for interfacial flows based on a continuum-field representation of the source terms

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Drag force of intermediate Reynolds number flow past mono- and bidisperse arrays of spheres

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