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Exploring a unified EMMS drag model for gas-solid fluidization

文献类型：期刊论文

作者Geng, Jingwei; Tian, Yujie; Wang, Wei1
刊名CHEMICAL ENGINEERING SCIENCE
出版日期2022-04-06
卷号251页码:17
ISSN号0009-2509
关键词Mesoscale Fluidization Drag EMMS CFD simulation
DOI10.1016/j.ces.2022.117444
英文摘要Gas-solid fluidization is characterized by pervasive, dilute-dense two-phase flow structures, which need mesoscale drag modeling to account for their subgrid effects. The classic formulation of the energyminimization multi-scale (EMMS) drag modeling requires a semi-empirical correlation of cluster diameter. To avoid using such a phenomenological description of mesoscale structures, in this work, we propose a two-level averaging approach: First, the mean drag in a fine-grid cell is defined as a weighted sum of the drag force in both the dilute and dense phases; Then, the second-level averaging is performed at the coarse-grid scale, where the unified EMMS drag is defined, and determined by performing a series expansion with respect to the phase-mean points of both the dilute and dense phases, respectively. The unified EMMS drag is validated with comparison to fine-grid simulation in a periodic domain and coarse-grid simulation of realistic fluidized beds, both showing fair agreement.(c) 2022 Elsevier Ltd. All rights reserved.
WOS关键词DISCRETE PARTICLE SIMULATION ; AVERAGED 2-FLUID MODEL ; STRUCTURE-DEPENDENT ANALYSIS ; EULERIAN SIMULATION ; ENERGY-DISSIPATION ; MULTISCALE CFD ; HIGH-DENSITY ; FLOWS ; BED ; RISER
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] ; National Natural Science Foundation of China[22161142006] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA17010202] ; Innovation Academy for Green Manufac-ture, Chinese Academy of Sciences[IAGM-2019-A03]
WOS研究方向Engineering
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000779473500002
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Innovation Academy for Green Manufac-ture, Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/53241]  
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.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Geng, Jingwei,Tian, Yujie,Wang, Wei. Exploring a unified EMMS drag model for gas-solid fluidization[J]. CHEMICAL ENGINEERING SCIENCE,2022,251:17.
APA Geng, Jingwei,Tian, Yujie,&Wang, Wei.(2022).Exploring a unified EMMS drag model for gas-solid fluidization.CHEMICAL ENGINEERING SCIENCE,251,17.
MLA Geng, Jingwei,et al."Exploring a unified EMMS drag model for gas-solid fluidization".CHEMICAL ENGINEERING SCIENCE 251(2022):17.

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来源：过程工程研究所

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