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

作　　者：Ruiyu Li Xiaole Huang Yuhao Wu Lingxiao Dong Srdjan Beloševic Aleksandar Milicevic Ivan Tomanovic Lei Deng Defu Che 

机构地区：[1]State Key Laboratory of Multiphase Flow in Power Engineering,School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an 710049,China [2]Shunde Institute of Inspection,Guangdong Institute of Special Equipment Inspection and Research,Foshan 528300,China [3]Department of Thermal Engineering and Energy,"VINCA" Institute of Nuclear Sciences–National Institute of the Republic of Serbia,University of Belgrade,Mike Petrovica Alasa 12-14,11351 Vinca,PO Box 522,11001 Belgrade,Serbia

出　　处：《Chinese Journal of Chemical Engineering》2023年第12期64-75,共12页中国化学工程学报（英文版）

基　　金：the China-CEEC Joint Higher Education Project(Cultivation Project)(CEEC2021001);Srdjan Beloševic,Aleksandar Milicevic and Ivan Tomanovic acknowledge the financial support by the Ministry of Science,Technological Development and Innovation of the Republic of Serbia(Contract Annex:451-03-47/2023-01/200017).

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·s^(-1) should be adopted to obtain normal hydrodynamics.

关 键 词：MFIX-DEM Simulation Dense flow GAS-SOLID Bubbling fluidized bed Drag model 

分 类 号：TQ051.13[化学工程]