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Unification of particle velocity distribution functions in gas-solid flow

文献类型：期刊论文

作者Zhao, Bidan1,2; Wang, Junwu1
刊名CHEMICAL ENGINEERING SCIENCE
出版日期2018-02-23
卷号177页码:333-339
关键词Fluidization Gas-solid Flow Kinetic Theory Granular Flow Clustering Structure Particle Velocity Distribution Function
ISSN号0009-2509
DOI10.1016/j.ces.2017.11.047
文献子类Article
英文摘要Continuum models have been extensively used in CFD simulation of gas-solid flow, which is usually closed with a kinetic theory of granular flow for particulate phase stresses and a correlation for interphase drag force. Particle velocity distribution function (PVDF) is the cornerstone of kinetic theory of granular flow and the PVDFs in gas-solid flow can be Maxwellian, bimodal and/ or non-Maxwellian with an overpopulated high-energy tail, depending on the physical nature of gas-solid flow. Here we theoretically show that the different PVDFs can be unified under the umbrella of a recently proposed kinetic theory framework (Wang et al., 2016) and the root of different PVDFs lies in the different characteristics of mesoscale structures. Validation of theoretical analysis is then carried out by comparing the theoretical prediction with experimental and DNS data available in literature. The findings of present study offer a possibility of developing a unified kinetic theory for gas-solid flows. (C) 2017 Elsevier Ltd. All rights reserved.
WOS关键词FILTERED 2-FLUID MODELS ; FLUIDIZED-BEDS ; KINETIC-THEORY ; NUMERICAL-SIMULATION ; EULERIAN SIMULATION ; GRANULAR FLOW ; CFB RISERS ; SUSPENSION ; EQUATIONS ; PARADIGM
WOS研究方向Engineering
语种英语
WOS记录号WOS:000425918100027
资助机构National Natural Science Foundation of China(21422608) ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences(QYZDJ-SSW-JSC029)
源URL[http://ir.ipe.ac.cn/handle/122111/24002]  
专题过程工程研究所_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, POB 353, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Bidan,Wang, Junwu. Unification of particle velocity distribution functions in gas-solid flow[J]. CHEMICAL ENGINEERING SCIENCE,2018,177:333-339.
APA Zhao, Bidan,&Wang, Junwu.(2018).Unification of particle velocity distribution functions in gas-solid flow.CHEMICAL ENGINEERING SCIENCE,177,333-339.
MLA Zhao, Bidan,et al."Unification of particle velocity distribution functions in gas-solid flow".CHEMICAL ENGINEERING SCIENCE 177(2018):333-339.

入库方式： OAI收割

来源：过程工程研究所

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