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| Nonequilibrium characteristics and spatiotemporal long-range correlations in dense gas-solid suspensions | |
Kong, Lingkai1,2; Xu, Ji1; Wang, Junwu1,2,3 ; Ge, Wei1,2,3,4
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| 2021-09-01 | |
| Source Publication | INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
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| ISSN | 0301-9322 |
| Volume | 142Pages:13 |
| Abstract | The nonequilibrium properties and strong spatiotemporal long-range correlations in gas-solid suspensions were analyzed systematically by discrete particle simulation in periodic domains. The effective interphase slip velocity is significantly larger than the particle terminal velocity, the particle velocity distribution function is non-Maxwellian with a high-energy tail and the solid concentration distribution function is far from the discrete Poisson distribution, all of which manifest strong deviation from the equilibrium or homogeneous state in gas-solid flow. The solid concentration, gas and solid velocities are spatiotemporally correlated and show a clear scale-dependence. More importantly, all characteristic correlation lengths scale linearly with the size of simulation domain, although the correlation length of solid concentration is much smaller than those of gas and solid velocities. On the other hand, the characteristic correlation times at first increase with increasing domain size and then seem to approach to asymptotic values. Those results indicate that the heterogeneity and spatiotemporal long-range correlations should be considered properly in continuum theory of heterogeneous gas-solid flow. (c) 2021 Elsevier Ltd. All rights reserved. |
| Keyword | Gas-solid suspension Mesoscale structure Long-range correlations Fluidization Multiphase flow |
| DOI | 10.1016/j.ijmultiphaseflow.2021.103731 |
| Language | 英语 |
| WOS Keyword | DIRECT NUMERICAL-SIMULATION ; DYNAMIC MULTISCALE METHOD ; FLUIDIZED-BEDS ; PREFERENTIAL CONCENTRATION ; EULERIAN SIMULATION ; RECURRENCE CFD ; 2-FLUID MODEL ; HEAT-TRANSFER ; FLOW ; PARTICLES |
| Funding Project | National Natural Science Foundation of China[11988102] ; National Natural Science Foundation of China[21978295] ; National Natural Science Foundation of China[91834303] ; National Natural Science Foundation of China[21821005] ; National Natural Science Foundation of China[92034302] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM2019A13] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM2019A03] ; Key Re-search Program of Frontier Science, Chinese Academy of Sciences[QYZDJSSWJSC029] ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21030700] |
| WOS Research Area | Mechanics |
| WOS Subject | Mechanics |
| Funding Organization | National Natural Science Foundation of China ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; Key Re-search Program of Frontier Science, Chinese Academy of Sciences ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences |
| WOS ID | WOS:000684300800010 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/49893 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Wang, Junwu; Ge, Wei |
| 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, Sch Chem Engn, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Innovat Acad Green Manufacture, POB 353, Beijing 100190, Peoples R China 4.Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China |
| Recommended Citation GB/T 7714 | Kong, Lingkai,Xu, Ji,Wang, Junwu,et al. Nonequilibrium characteristics and spatiotemporal long-range correlations in dense gas-solid suspensions[J]. INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,2021,142:13. |
| APA | Kong, Lingkai,Xu, Ji,Wang, Junwu,&Ge, Wei.(2021).Nonequilibrium characteristics and spatiotemporal long-range correlations in dense gas-solid suspensions.INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,142,13. |
| MLA | Kong, Lingkai,et al."Nonequilibrium characteristics and spatiotemporal long-range correlations in dense gas-solid suspensions".INTERNATIONAL JOURNAL OF MULTIPHASE FLOW 142(2021):13. |
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