Coupled simulation of fluid-particle interaction for large complex granules:A resolved CFD-DEM method for modelling the airflow in a vertical fixed bed of irregular sinter particles  

作　　者：Chengzhi Li Yu Zhang Jiahe Shen Wei Zhang 

机构地区：[1]The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China [2]Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China [3]School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China [4]Centre for Bulk Solids and Particulate Technologies,The University of Newcastle,Callaghan NSW 2308,Australia

出　　处：《Particuology》2024年第7期292-306,共15页颗粒学报（英文版）

基　　金：the financial support for this work from the National Natural Science Foundation of China(grant No.52104340);China Postdoctoral Science Foundation(grant No.2020M672425);The Key Research and Development Program of Hubei Province(grant No.2022BCA058);Natural Science Foundation of Hubei Province(grant No.2020CFB133).

摘　　要：A resolved CFD-DEM method is proposed to simulate the fluid-particle interaction for large complex granules.The airflow in a vertical sinter fixed bed is numerically studied using this method.The multi-sphere clumped method is used to create irregular sinter particles in DEM.The immersed boundary method and dynamic cell refinement are applied to describe the fluid flow around particles with higher resolution,by which the fluid-particle interaction can be simulated more accurately.The simulation results presented the packing voidage distributions and the airflow fields in the sinter beds of different single and mixed particle size ranges.The bed pressure drops were simulated and the results were compared with the corresponding experimental ones.The good agreement indicated that the proposed resolved CFD-DEM method is an effective tool to model the fluid-particle interaction for irregular large granules in the gas-solid multi-phase systems.

关 键 词：Resolved CFD-DEM method Irregular sinter particles Multi-sphere clumped method Immersed boundary method Dynamic cell refinement 

分 类 号：O35[理学—流体力学]