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Toward a Mesoscale-Structure-Based Kinetic Theory for Heterogeneous Gas-Solid Flow: Particle Velocity Distribution Function
Wang, Junwu1; Zhao, Bidan1,2; Li, Jinghai1
2016-08-01
发表期刊AICHE JOURNAL
ISSN0001-1541
卷号62期号:8页码:2649-2657
摘要

Mesoscience has recently been proposed as a possible general concept for describing complex systems far from equilibrium, however, concrete formulations are needed, and particularly, a statistical mechanics foundation of mesoscience remains to be explored. To this end, the mathematical theory of stochastic geometry is combined with the energy minimization multi-scale (EMMS) principle under the concept of mesoscience to propose a statistical mechanics framework. An EMMS-based particle velocity distribution function is then derived as an example to show how the proposed framework works, and more importantly, as a first key step toward a generalized kinetic theory for heterogeneous gas-solid flow. It was shown that the resultant EMMS-based distribution is bimodal, instead of the widely-used Maxwellian distribution, but it reduces to the Maxwellian distribution when the gas-solid system is homogeneous. The EMMS-based distribution is finally validated by comparing its prediction of the variance of solid concentration fluctuation and granular temperature with experimental data available in literature. (C) 2016 American Institute of Chemical Engineers

关键词Fluidization Kinetic Theory Granular Flow Mesoscale Structure Particle Velocity Distribution Mesoscience
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1002/aic.15244
收录类别SCI
语种英语
关键词[WOS]CIRCULATING FLUIDIZED-BED ; FILTERED 2-FLUID MODELS ; NEAR-WALL REGION ; GRANULAR TEMPERATURE ; EULERIAN SIMULATION ; FCC PARTICLES ; SHOCK WAVE ; CFB RISERS ; DRAG MODEL ; STRESSES
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者National Natural Science Foundation of China(91334106 ; Chinese Academy of Sciences(XDA07080200) ; 21422608)
WOS记录号WOS:000382986000006
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21314
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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Wang, Junwu,Zhao, Bidan,Li, Jinghai. Toward a Mesoscale-Structure-Based Kinetic Theory for Heterogeneous Gas-Solid Flow: Particle Velocity Distribution Function[J]. AICHE JOURNAL,2016,62(8):2649-2657.
APA Wang, Junwu,Zhao, Bidan,&Li, Jinghai.(2016).Toward a Mesoscale-Structure-Based Kinetic Theory for Heterogeneous Gas-Solid Flow: Particle Velocity Distribution Function.AICHE JOURNAL,62(8),2649-2657.
MLA Wang, Junwu,et al."Toward a Mesoscale-Structure-Based Kinetic Theory for Heterogeneous Gas-Solid Flow: Particle Velocity Distribution Function".AICHE JOURNAL 62.8(2016):2649-2657.
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