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Effect of particle clusters on mass transfer between gas and particles in gas-solid flows
Wang, Limin1; Wu, Chengyou2; Ge, Wei1
2017-09-01
发表期刊POWDER TECHNOLOGY
ISSN0032-5910
卷号319期号:SEP页码:221-227
摘要

Gas-solid riser flows tend to be characterized by particle clusters that significantly affect the flow, the mass/heat transfer, and the reaction behavior. To account for the effect of such particle clustering on the mass transfer between gas and particles, we use a lattice Boltzmann model with coupled mass transfer to conduct fully resolved simulations for flow past arrays of particles with both homogeneous and heterogeneous structures. We find that the distributions of velocity and concentration among the particle arrays are both affected significantly by particle clustering, and that the computed Sherwood number for either the homogeneous or heterogeneous particle structure increases exponentially with Reynolds number. However, the Sherwood number for homogeneously distributed particles is 3-5 times greater than that for heterogeneously distributed particles. This further supports the case for particle clustering having a serious effect on the mass-transfer efficiency between gas and solid in processes that involve flow past arrays of particles. Finally, the feasibility of using the lattice Boltzmann method with our mass-transfer model to describe the mass transfer in a heterogeneous two-phase gas-solid flow is also discussed. (C) 2017 Elsevier B.V. All rights reserved.

关键词Gas-solid Flows Particle Cluster Lattice Boltzmann Method Mass Transfer Fully Resolved Simulation
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.powtec.2017.06.046
收录类别SCI
语种英语
关键词[WOS]DIRECT NUMERICAL-SIMULATION ; LATTICE-BOLTZMANN SIMULATION ; STRUCTURE-DEPENDENT DRAG ; FLUIDIZED-BED ; HEAT-TRANSFER ; PACKED-BEDS ; EULERIAN SIMULATION ; CFD SIMULATION ; TRANSFER MODEL ; 2-PHASE FLOW
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者National Natural Science Foundation of China(91434113 ; National Key Basic Research Program of China(2015CB251402) ; Chinese Academy of Sciences(QYZDB-SSW-SYS029 ; 21106155) ; CXJJ-14-Z72 ; XDA07080303)
WOS记录号WOS:000407982600022
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23152
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.Changsha Res Inst Min & Met Co Ltd, Changsha 410012, Hunan, Peoples R China
推荐引用方式
GB/T 7714
Wang, Limin,Wu, Chengyou,Ge, Wei. Effect of particle clusters on mass transfer between gas and particles in gas-solid flows[J]. POWDER TECHNOLOGY,2017,319(SEP):221-227.
APA Wang, Limin,Wu, Chengyou,&Ge, Wei.(2017).Effect of particle clusters on mass transfer between gas and particles in gas-solid flows.POWDER TECHNOLOGY,319(SEP),221-227.
MLA Wang, Limin,et al."Effect of particle clusters on mass transfer between gas and particles in gas-solid flows".POWDER TECHNOLOGY 319.SEP(2017):221-227.
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