中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
A steady-state EMMS drag model for fluidized beds

文献类型:期刊论文

作者Tian, Yujie; Lu, Bona; Li, Fei; Wang, Wei2
刊名CHEMICAL ENGINEERING SCIENCE
出版日期2020-06-29
卷号219页码:14
关键词Fluidization Drag Meso-scale Structures Multiphase Flow Simulation
ISSN号0009-2509
DOI10.1016/j.ces.2020.115616
英文摘要

Mesoscale structures exist inherently in fluidized beds and hence should be taken into account in the constitutive modeling of the drag force. To account for mesoscale effects, previous efforts have been paid on extending the steady-state Energy-Minimization Multi-Scale (EMMS) model to the sub-grid level by introducing acceleration terms into the force balance equations. The EMMS drag models thereof were normally confined into specific flow regimes. In this work, the definition of the heterogeneity index was refined by incorporating the steady-state force balance between the drag and buoyed weight. A simple derivation thereof agrees well with the filtered drag model. Based on such analysis, we proposed a new drag model by solving the steady-state EMMS equations. As a preliminary validation, this new drag was found to allow successful CFD simulation of flow behavior of fluidized beds covering a broad range of flow regimes. (C) 2020 Elsevier Ltd. All rights reserved.

WOS关键词Gas-solid Flows ; Averaged 2-fluid Model ; Cfd Simulation ; Particle Flows ; Multiscale Cfd ; Constitutive Models ; Validation ; Cluster ; Arrays ; Mesoscales
资助项目National Natural Science Foundation of China[21625605] ; National Natural Science Foundation of China[21821005] ; National Natural Science Foundation of China[91834302]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000530711700011
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Natural Science Foundation of China
源URL[http://ir.ipe.ac.cn/handle/122111/40547]  
专题中国科学院过程工程研究所
通讯作者Wang, Wei
作者单位1.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714
Tian, Yujie,Lu, Bona,Li, Fei,et al. A steady-state EMMS drag model for fluidized beds[J]. CHEMICAL ENGINEERING SCIENCE,2020,219:14.
APA Tian, Yujie,Lu, Bona,Li, Fei,&Wang, Wei.(2020).A steady-state EMMS drag model for fluidized beds.CHEMICAL ENGINEERING SCIENCE,219,14.
MLA Tian, Yujie,et al."A steady-state EMMS drag model for fluidized beds".CHEMICAL ENGINEERING SCIENCE 219(2020):14.

入库方式: OAI收割

来源:过程工程研究所

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