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A sub-grid EMMS drag for multiphase particle-in-cell simulation of fluidization
Song, Feifei1,2; Li, Fei1; Wang, Wei1,2; Li, Jinghai1
2018-03-01
发表期刊POWDER TECHNOLOGY
ISSN0032-5910
卷号327页码:420-429
摘要To account for the sub-grid heterogeneity of gas-solid flow in the multi-phase particle-in-cell (MP-PIC) method, a structure-dependent drag model is proposed in this work by taking into account the particle/parcel position information. The parcel is viewed as a cluster of particles. The local, inter-parcel porosity is calculated by using the method of smoothed particle hydrodynamics (SPH), while the intra-parcel porosity and the diameter of cluster are closed by using the energy-minimization multi-scale (EMMS) model. The local velocities of gas phase and different solid parcels are determined by using the constraint of pressure drop balance between phases as in the EMMS model. The drag force acting on each parcel is then determined with the sub-grid information of velocities and porosities. A bubbling fluidized bed and a circulating fluidized bed riser are simulated to validate this drag model. And the results show good agreements with experimental data. (C) 2018 Elsevier B.V. All rights reserved.
关键词Simulation Fluidization Meso-scale Discrete Particle Method (Dpm) Multiphase Particle-in-cell (Mp-pic)
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.powtec.2017.12.079
收录类别SCI
语种英语
关键词[WOS]GAS-SOLID FLOWS ; STRUCTURE-DEPENDENT ANALYSIS ; NUMERICAL-SIMULATION ; MULTISCALE CFD ; 2-PHASE FLOW ; RISER FLOWS ; MODEL ; BED ; SCALE ; HYDRODYNAMICS
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者National Key R&D Program of China(2017YFB0602701-04) ; National Natural Science Foundation of China(91334204 ; 21625605)
WOS记录号WOS:000425562000040
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23993
专题多相复杂系统国家重点实验室
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, Beijing 100049, Peoples R China
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Song, Feifei,Li, Fei,Wang, Wei,et al. A sub-grid EMMS drag for multiphase particle-in-cell simulation of fluidization[J]. POWDER TECHNOLOGY,2018,327:420-429.
APA Song, Feifei,Li, Fei,Wang, Wei,&Li, Jinghai.(2018).A sub-grid EMMS drag for multiphase particle-in-cell simulation of fluidization.POWDER TECHNOLOGY,327,420-429.
MLA Song, Feifei,et al."A sub-grid EMMS drag for multiphase particle-in-cell simulation of fluidization".POWDER TECHNOLOGY 327(2018):420-429.
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