| Unification of particle velocity distribution functions in gas-solid flow | |
Zhao, Bidan1,2; Wang, Junwu1
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| 2018-02-23 | |
| Source Publication | CHEMICAL ENGINEERING SCIENCE
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| ISSN | 0009-2509 |
| Volume | 177Pages:333-339 |
| Abstract | 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. |
| Keyword | Fluidization Gas-solid Flow Kinetic Theory Granular Flow Clustering Structure Particle Velocity Distribution Function |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology |
| DOI | 10.1016/j.ces.2017.11.047 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | FILTERED 2-FLUID MODELS ; FLUIDIZED-BEDS ; KINETIC-THEORY ; NUMERICAL-SIMULATION ; EULERIAN SIMULATION ; GRANULAR FLOW ; CFB RISERS ; SUSPENSION ; EQUATIONS ; PARADIGM |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Organization | National Natural Science Foundation of China(21422608) ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences(QYZDJ-SSW-JSC029) |
| WOS ID | WOS:000425918100027 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/24002 |
| Collection | 多相复杂系统国家重点实验室 |
| Affiliation | 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 |
| Recommended Citation 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. |
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