4.7 Article

Numerical study and optimisation of the boiling of refrigerant in a vertical corrugated tube using vapour phase tracking

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Thermodynamics

A CFD Study of [C2mim][CH3SO3]/Al2O3 Ionanofluid Flow and Heat Transfer in Grooved Tubes

Mehrdad Mesgarpour et al.

Summary: The study investigates the flow and heat transfer of an ionanofluid in different tube configurations using computational fluid dynamics. Results show that the impact of grooves on heat transfer is more significant at low concentrations, while increasing nanoparticle concentration enhances heat transfer coefficient and pumping power. The presence of nanoparticles has a greater effect on heat transfer at lower Reynolds numbers, and the pumping power increases with higher Reynolds numbers. Grooved tubes lead to more uniform temperature and velocity distributions, with spirally corrugated grooves achieving the highest heat transfer coefficient and pumping power.

INTERNATIONAL JOURNAL OF THERMOPHYSICS (2021)

Article Mechanics

An adaptive coupled volume-of-fluid and level set method based on unstructured grids

An Liu et al.

Summary: The study introduces an adaptive coupled volume-of-fluid and level set (VOSET) method based on unstructured grids for simulating incompressible interfacial flows. Through validation with four classical test cases, it is found that the adaptive VOSET algorithm enhances accuracy near the interface, particularly in capturing curvature and surface tension, while also improving computational efficiency by significantly reducing the number of grid cells.Comparatively, the adaptive VOSET requires only 4.85%-24.5% of the number of adaptive grid cells and 5.31%-15.93% of the computational time compared to fixed unstructured grid cells, demonstrating outstanding properties in terms of time and computational cost savings.

PHYSICS OF FLUIDS (2021)

Article Energy & Fuels

Geometry optimization of double pass solar air heater with helical flow path

Mehrdad MesgarPour et al.

Summary: This study investigated the impact of different geometric parameters on the heat transfer performance of solar air heaters (SAH) and optimized the geometry using differential evolution. The optimized geometry resulted in significantly higher thermo-hydraulic performance and reduced pressure drop.

SOLAR ENERGY (2021)

Article Mechanics

Computational analysis of obstructive disease and cough intensity effects on the mucus transport and clearance in an idealized upper airway model using the volume of fluid method

Hang Yi et al.

Summary: The study highlights the importance of using an appropriate non-Newtonian fluid model for accurate simulation of mucus transport, as simplifying mucus as a Newtonian fluid may lead to inaccuracies. Intense coughing can enhance mucus clearance efficiency in COPD upper airways, but there is a risk of mucus accumulation and obstruction in cases of insufficient cough intensity.

PHYSICS OF FLUIDS (2021)

Article Energy & Fuels

Numerical optimization of a new concept in porous medium considering thermal radiation: Photovoltaic panel cooling application

Mehrdad Mesgarpour et al.

Summary: This study investigated the effect of a new porous heat sink model on the surface temperature of solar photovoltaic panels, comparing it with rigid fins and considering thermal radiation. Optimization algorithms were used to find the optimal porosity level for improving heat transfer efficiency.

SOLAR ENERGY (2021)

Article Thermodynamics

Numerical investigation on the condensation of R134a, R1234ze(E) and R450A in mini-channels

Yuce Liu et al.

Summary: This paper investigates the condensation heat transfer characteristics of R450A and compares it with R134a and R1234ze(E) in mini-channels under various conditions. The study shows that R450A has lower heat transfer coefficients compared to R134a and R1234ze(E) at different mass fluxes and vapor qualities. The effects of vapor quality, mass flux, channel diameter, and fluid properties on the condensation of R450A are also analyzed.

INTERNATIONAL JOURNAL OF REFRIGERATION (2021)

Article Thermodynamics

Effect of geometrical parameters on entropy generation during R134a boiling flow inside unique internally grooved tubes: Experimental approach

A. Hojati et al.

Summary: The study investigates the entropy generation during two-phase boiling flow of R134a refrigerant in horizontally internally grooved tubes, and found that using grooved tubes is generally beneficial except for certain conditions. The ratio of groove pitch length to groove width within the geometrical parameters has the most notable effect on the total entropy generation.

INTERNATIONAL JOURNAL OF THERMAL SCIENCES (2021)

Article Engineering, Chemical

The effect of variable temperature and location on relative thermal conductivity (RTC) on the heat pipe in the presence of AL2O3 nanoparticles: Numerical and optimization approaches

Mohammad Mohammadiun et al.

Summary: This study aims to present the relative thermal conductivity of a heat pipe based on temperature and length in optimized geometry. By considering unsteady, multiphase fluid inside the heat pipe and incorporating evaporation, condensation, and conduction in the simulation, the approach can improve heat transfer efficiency and reduce variable range. The numerical simulation showed that the relative thermal conductivity could enhance heat transfer accuracy compared to standard methods by up to 8%, especially with increased heat flux.

JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS (2021)

Article Mechanics

Numerical analysis of two-phase flow in heterogeneous porous media during pre-flush stage of matrix acidizing: Optimization by response surface methodology

Ehsan Sabooniha et al.

Summary: The study analyzed the oil trapping behavior during the pre-flush stage and investigated the influence of wetting properties for a natural rock sample using a two-phase flow model. A stability phase diagram was established and the most stable displacement region was found.

PHYSICS OF FLUIDS (2021)

Article Mechanics

Numerical convergence of volume of fluid based large eddy simulations of atomizing sprays

F. Abbas et al.

Summary: This paper presents three volume of fluid (VoF)-based methods for large eddy simulations of atomizing sprays with different treatments of the unresolved interface. The new explicit volume diffusion model (EVD) shows superior numerical convergence and is validated through analysis of mean and rms values of key parameters. Investigating two models for the surface tension force, it is found that an improved volume-averaged model based on fractal properties provides better predictions of mean volume fraction relative to experimental data, but requires a model constant selection.

PHYSICS OF FLUIDS (2021)

Article Thermodynamics

Direct numerical simulation of evaporation and condensation with the geometric VOF method and a sharp-interface phase-change model

Lubomir Bures et al.

Summary: This paper presents a coupling of the geometric Volume-of-Fluid (VOF) method with a sharp-interface phase-change model for accurate resolution of multiphase problems. Verification cases demonstrate the method's performance and feasibility, marking an important step in the development of multiphase codes capable of accurately resolving complex three-dimensional multiphase flows.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

Article Engineering, Environmental

Prediction of the spread of Corona-virus carrying droplets in a bus-A computational based artificial intelligence approach

Mehrdad Mesgarpour et al.

Summary: This study proposes a novel computational and AI framework to predict the spread of droplets produced by a sneezing passenger on a bus, showing that droplets smaller than 250 micrometers are most responsible for virus transmission in the bus environment.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Thermodynamics

Large Eddy Simulation of turbulent reacting flows with conjugate heat transfer and radiative heat transfer

C. Fureby

Summary: Large Eddy Simulation (LES) is a popular model for predicting turbulent combustion, but thermal radiation and conjugate heat transfer are often overlooked. Experimental results show that considering thermal radiation and conjugate heat transfer in LES simulations results in better agreement with experimental data compared to models that do not consider these effects.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2021)

Article Computer Science, Interdisciplinary Applications

Adaptive Eulerian framework for boiling and evaporation

Mehdi Khalloufi et al.

JOURNAL OF COMPUTATIONAL PHYSICS (2020)

Article Physics, Multidisciplinary

Heat transfer and fluid flow for tube included a porous media: Assessment and Multi-Objective Optimization Using Particle Swarm Optimization (PSO) Algorithm

Sajjad Keykhah et al.

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS (2020)

Article Engineering, Mechanical

Sensitivity study of momentum and turbulence models for subcooled boiling phenomena simulation

Brian de Lima Curtt et al.

JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING (2020)

Article Computer Science, Software Engineering

An advanced hybrid smoothed particle hydrodynamics-fluid implicit particle method on adaptive grid for condensation simulation

Jiajun Shi et al.

COMPUTER ANIMATION AND VIRTUAL WORLDS (2020)

Article Mechanics

Sonneting critical heat flux: New insights in boiling multiphase flow

Sai Raja Gopal Vadlamudi et al.

PHYSICS OF FLUIDS (2020)

Article Mechanics

Two-phase flow boiling in a microfluidic channel at high mass flux

Chanyoot Keepaiboon et al.

PHYSICS OF FLUIDS (2020)

Article Thermodynamics

Numerical investigation of flow boiling in manifold microchannel-based heat exchangers

Wenyuan Xie et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2020)

Article Thermodynamics

Pressure drop of R134a and R1234ze(E) flow boiling in microchannel arrays with single- and double-side heating

Ji Wang et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2020)

Review Computer Science, Interdisciplinary Applications

A Review of Embedded Large Eddy Simulation for Internal Flows

Joshua Holgate et al.

ARCHIVES OF COMPUTATIONAL METHODS IN ENGINEERING (2019)

Article Thermodynamics

A novel interphase mass transfer model toward the VOF simulation of subcooled flow boiling

Fei Dong et al.

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS (2019)

Article Thermodynamics

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

Saif Ed-Din Fertahi et al.

APPLIED THERMAL ENGINEERING (2018)

Article Thermodynamics

Hydrodynamic formation of a microlayer underneath a boiling bubble

Satbyoul Jung et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2018)

Review Thermodynamics

Review of computational studies on boiling and condensation

Chirag R. Kharangate et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2017)

Article Thermodynamics

Numerical modeling of three-phase flow with phase change using the level-set method

Y. F. Yap et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2017)

Article Mechanics

Convective heat transfer in non-uniformly heated corrugated slots

Arman Abtahi et al.

PHYSICS OF FLUIDS (2017)

Article Engineering, Chemical

Modeling and determination of heat transfer coefficient in a basin solar still using CFD

Narjes Setoodeh et al.

DESALINATION (2011)

Article Thermodynamics

Evaporation heat transfer and friction characteristics of R-134a flowing downward in a vertical corrugated tube

Kanit Aroonrat et al.

EXPERIMENTAL THERMAL AND FLUID SCIENCE (2011)

Article Thermodynamics

CFD studies on natural convection heat transfer of Al2O3-water nanofluids

W. Rashmi et al.

HEAT AND MASS TRANSFER (2011)

Article Thermodynamics

Correlations for evaporation heat transfer coefficient and two-phase friction factor for R-134a flowing through horizontal corrugated tubes

Suriyan Laohalertdecha et al.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2011)

Article Thermodynamics

Condensation heat transfer and flow characteristics of R-134a flowing through corrugated tubes

Suriyan Laohalertdecha et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2011)

Article Thermodynamics

An experimental study into the evaporation heat transfer and flow characteristics of R-134a refrigerant flowing through corrugated tubes

Suriyan Laohalertdecha et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2011)

Article Thermodynamics

The effects of corrugation pitch on the condensation heat transfer coefficient and pressure drop of R-134a inside horizontal corrugated tube

Suriyan Laohalertdecha et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2010)

Article Computer Science, Interdisciplinary Applications

A conservative level set method for two phase flow II

Elin Olsson et al.

JOURNAL OF COMPUTATIONAL PHYSICS (2007)

Article Computer Science, Interdisciplinary Applications

A conservative level set method for two phase flow

E Olsson et al.

JOURNAL OF COMPUTATIONAL PHYSICS (2005)

Article Engineering, Chemical

Theoretical prediction of flow regime transition in bubble columns by the population balance model

TF Wang et al.

CHEMICAL ENGINEERING SCIENCE (2005)

Review Engineering, Chemical

Model for the viscosity and thermal conductivity of refrigerants, including a new correlation for the viscosity of R134a

ML Huber et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2003)

Article Computer Science, Interdisciplinary Applications

Exactly conservative semi-Lagrangian scheme for multi-dimensional hyperbolic equations with directional splitting technique

T Nakamura et al.

JOURNAL OF COMPUTATIONAL PHYSICS (2001)

Article Thermodynamics

Condensation and evaporation heat transfer of R410A inside internally grooved horizontal tubes

M Goto et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2001)