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Gas penetrating flow through dynamic particle clusters
Liu, Xinhua; Jiang, Yuefang; Zhang, Nan; Li, Jinghai
AbstractGas penetrating flow was found to exist in a static cluster model and contribute much to the suspension of particles in our previous study. This phenomenon however needs to be clarified further since particle clusters in actual gas-solid flow have no fixed shapes and internal structures due to their dynamic evolution with time and space. In this article, a general guideline based on gradient calculation is proposed to identify particle clusters from solids concentration fields, so as to quantify gas penetrating flow through dynamic particle clusters. By EMMS-based CFD simulation and two-phase PIV measurement, the internal two-phase flow fields of dynamic particle clusters are analyzed to gain an insight into gas-solid interaction inside particle clusters. Both the simulated and experimental results are qualitatively consistent with the previous findings that gas penetrating flow significantly increases with the increase of cluster voidage and hence should betaken into account in the mathematical modeling of particle clusters in gas-solid fluidization. (C) 2016 Elsevier B.V. All rights reserved.
KeywordFluidization Cluster Numerical Simulation Piv Measurement Penetrating Flow
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences(XDA07080400) ; National Key Basic Research Program of China (973 program)(2014CB744304) ; Natural Science Foundation of China(21376244 ; 91334107)
WOS IDWOS:000378969000041
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Document Type期刊论文
AffiliationChinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Liu, Xinhua,Jiang, Yuefang,Zhang, Nan,et al. Gas penetrating flow through dynamic particle clusters[J]. POWDER TECHNOLOGY,2016,297(SEP):409-414.
APA Liu, Xinhua,Jiang, Yuefang,Zhang, Nan,&Li, Jinghai.(2016).Gas penetrating flow through dynamic particle clusters.POWDER TECHNOLOGY,297(SEP),409-414.
MLA Liu, Xinhua,et al."Gas penetrating flow through dynamic particle clusters".POWDER TECHNOLOGY 297.SEP(2016):409-414.
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