4.7 Article

CFD-DEM study of spout incoherence phenomena in a conical spouted bed

Related references

Note: Only part of the references are listed.
Article Engineering, Chemical

CFD-DEM model study of gas-solid flow in a spout fluidized bed with an umbrella-like baffle

Yuanhe Yue et al.

Summary: This paper identifies a new flow regime in a rectangular spout fluidized bed by applying an umbrella-like baffle, and studies it using the CFD-DEM approach. The new flow regime features multi-stage spouting, with first spouting and second spouting. The study explores the robustness, mixing efficiency, and formation mechanism of the multi-stage spouting pattern, showing improved efficiency and dynamic balance between the two spouts.

CHEMICAL ENGINEERING SCIENCE (2021)

Article Engineering, Chemical

Numerical and experimental investigations of instability in a spouted bed with non-spherical particles

Tianyu Wang et al.

Summary: The instability of a spouted bed containing non-spherical particles was investigated both numerically and experimentally. Conditions that created an S-shaped gas channel in the center of the bed proved the instability of non-spherical particles. The study also revealed that the granular temperature distribution of the particles and bubbles was associated with the gas channel region.

POWDER TECHNOLOGY (2021)

Article Engineering, Chemical

Gas-solid mixing and heat transfer performance in alternating spout deflection

Yuanhe Yue et al.

Summary: In this study, the alternating spout deflection (ASD) is compared with the spout-fluidisation (SF) flow pattern in terms of gas-solid hydrodynamics, mixing, and heat transfer performance using a Computer Fluid Dynamic-Discrete Element Method (CFDDEM) model. The ASD shows advantages in terms of particle packing state, mixing performance, and heat transfer efficiency compared to SF.

CHEMICAL ENGINEERING SCIENCE (2021)

Article Engineering, Environmental

Experimental investigation of spout incoherence in a spouted bed

Yuanhe Yue et al.

Summary: This study quantifies the phenomenon of spout incoherence in spouted beds for the first time, by measuring particle blockage to depict the regularity, frequency, and length of particle blockage. The results reveal that the static bed height has significant effects on spout incoherence, with increasing bed height reducing the frequency and length of particle blockage.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Engineering, Chemical

Unresolved CFD-DEM simulation of spherical and ellipsoidal particles in conical and prismatic spouted beds

A. Atxutegi et al.

Summary: Different drag models were implemented and validated for simulating spherical and ellipsoidal particles in spouted beds, with some models found to be more suitable for different particle shapes. The models were able to predict key operating parameters accurately and demonstrate the capability to predict particle orientation in the bed, which is crucial for the design of coating apparatuses in the pharmaceutical industry.

POWDER TECHNOLOGY (2021)

Article Engineering, Environmental

Simulations of biomass pyrolysis using glued-sphere CFD-DEM with 3-D intra-particle models

Liqiang Lu et al.

Summary: This research utilized a glued-sphere computational fluid dynamic discrete element method to investigate the effects of biomass particle shapes and sizes on pyrolysis. The study revealed significant influences of surface areas and mass distributions on interphase heat transfer and chemical reactions, with neglectable intra-particle heat transfer for certain conditions. Different reactor types were simulated to analyze conversion distributions, showing the best balance between uniform and fast conversion in the fluidized bed.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Engineering, Chemical

Coarse-grained DEM study of solids sedimentation in water

Zhouzun Xie et al.

POWDER TECHNOLOGY (2020)

Article Engineering, Chemical

CFD-DEM simulation of a pseudo-two-dimensional spouted bed comprising coarse particles

B. Mahmoodi et al.

PARTICUOLOGY (2019)

Article Engineering, Chemical

Detecting stability of conical spouted beds based on information entropy theory

Chiya Savari et al.

POWDER TECHNOLOGY (2019)

Article Engineering, Chemical

Investigation of hydrodynamics of binary solids mixture spouted beds using radioactive particle tracking (RPT) technique

Thaar Al-Juwaya et al.

CHEMICAL ENGINEERING RESEARCH & DESIGN (2019)

Article Engineering, Chemical

Particle-scale study of spout deflection in a flat-bottomed spout fluidized bed

Yuanhe Yue et al.

CHEMICAL ENGINEERING SCIENCE (2019)

Article Engineering, Environmental

Kinetic modeling and experimental validation of biomass fast pyrolysis in a conical spouted bed reactor

Gartzen Lopez et al.

CHEMICAL ENGINEERING JOURNAL (2019)

Article Engineering, Chemical

Particle-Scale Study of the Effect of Operating Conditions on Spout Deflection Behavior in a Flat-Bottomed Spout-Fluidized Bed

Yuanhe Yue et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2019)

Article Thermodynamics

Numerical simulation of reactive gas-particle flow in a solar jet spouted bed reactor for continuous biomass gasification

Houssame Boujjat et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2019)

Article Engineering, Chemical

Assessment of Different Discrete Particle Methods Ability To Predict Gas-Particle Flow in a Small-Scale Fluidized Bed

Liqiang Lu et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2017)

Article Engineering, Chemical

CFD-DEM simulation of a conical spouted bed with open-sided draft tube containing fine particles

Bayazid Mahmoodi et al.

JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS (2017)

Article Engineering, Chemical

Coarse-Grained-Particle Method for Simulation of Liquid-Solids Reacting Flows

Liqiang Lu et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2016)

Article Engineering, Chemical

Investigations on the spouting stability in a prismatic spouted bed and apparatus optimization

Vitalij Salikov et al.

ADVANCED POWDER TECHNOLOGY (2015)

Article Engineering, Environmental

Verification and validation of a coarse grain model of the DEM in a bubbling fluidized bed

Mikio Sakai et al.

CHEMICAL ENGINEERING JOURNAL (2014)

Article Engineering, Chemical

Cartesian grid simulations of bubbling fluidized beds with a horizontal tube bundle

Tingwen Li et al.

CHEMICAL ENGINEERING SCIENCE (2011)