Comparative analysis on gas-solid drag models in MFIX-DEM simulations of bubbling fluidized bed

被引：0

作者：

Li, Ruiyu ^{[1
,2
]}

Huang, Xiaole ^{[1
]}

Wu, Yuhao ^{[1
]}

Dong, Lingxiao ^{[1
]}

Belosevic, Srdjan ^{[3
]}

Milicevic, Aleksandar ^{[3
]}

Tomanovic, Ivan ^{[3
]}

Deng, Lei ^{[1
]}

Che, Defu ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China

[2] Guangdong Inst Special Equipment Inspect & Res, Shunde Inst Inspect, Foshan 528300, Peoples R China

[3] Univ Belgrade, VINCA Inst Nucl Sci, Natl Inst Republ Serbia, Dept Thermal Engn & Energy, Mike Petrovica Alasa 12-14,POB 522, Belgrade 11001, Serbia

来源：

CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2023年 / 64卷

关键词：

MFIX-DEM; Simulation; Dense flow; Gas-solid; Bubbling fluidized bed; Drag model; DIRECT NUMERICAL-SIMULATION; CFD SIMULATION; RESOLVED SIMULATIONS; GRANULAR TEMPERATURE; PARTICLE-SYSTEMS; MONO-DISPERSE; 2-FLUID MODEL; GELDART-B; FLOW; TFM;

D O I：

10.1016/j.cjche.2023.06.002

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this study, the open-source software MFIX-DEM simulations of a bubbling fluidized bed (BFB) are applied to assess nine drag models according to experimental and direct numerical simulation (DNS) results. The influence of superficial gas velocity on gas-solid flow is also examined. The results show that according to the distribution of time-averaged particle axial velocity in y direction, except for Wen-Yu and Tenneti-Garg-Subramaniam (TGS), other drag models are consistent with the experimental and DNS results. For the TGS drag model, the layer-by-layer movement of particles is observed, which indicates the particle velocity is not correctly predicted. The time domain and frequency domain analysis results of pressure drop of each drag model are similar. It is recommended to use the drag model derived from DNS or fine grid computational fluid dynamics-discrete element method (CFD-DEM) data first for CFD-DEM simulations. For the investigated BFB, the superficial gas velocity less than 0.9 m center dot s ⠃1 should be adopted to obtain normal hydrodynamics. (c) 2023 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.

引用

页码：64 / 75

页数：12

共 78 条

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