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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

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.

KeywordSimulation Fluidization Meso-scale Discrete Particle Method (Dpm) Multiphase Particle-in-cell (Mp-pic)
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS KeywordGas-solid Flows ; Structure-dependent Analysis ; Numerical-simulation ; Multiscale Cfd ; 2-phase Flow ; Riser Flows ; Model ; Bed ; Scale ; Hydrodynamics
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Key R&D Program of China(2017YFB0602701-04) ; National Natural Science Foundation of China(91334204 ; 21625605)
WOS IDWOS:000425562000040
Citation statistics
Document Type期刊论文
Affiliation1.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
Recommended Citation
GB/T 7714
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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