| Investigation of particle size impact on dense particulate flows in a vertical pipe | |
Ren WL(任万龙); Zhang XH(张旭辉) ; Zhang Y(张岩); Li P(李鹏); Lu XB(鲁晓兵)
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| Source Publication | PHYSICS OF FLUIDS
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| 2023-07-01 | |
| Volume | 35Issue:7Pages:73302 |
| ISSN | 1070-6631 |
| Abstract | In this work, a semi-resolved computational fluid dynamics-discrete element method is employed to study the effects of fluid-particle and particle-particle/wall interactions on particle mixing and segregation behaviors and particle dynamics with different particle sizes in a vertical pipe. There are two species of particles with the same density in the vertical pipe: d(1) = 10 (species 1) and d(2) = 2-7 mm (species 2), and species 2 contains both fine and coarse particles. The Stokes number St(p) is introduced to characterize the effects of different particle sizes on particle dynamics. First, the particle mixing and segregation behaviors with different size ratios are qualitatively analyzed. By comparing with smaller size ratios, obvious granular plugs and stronger contact force networks occur at larger size ratios. Second, after the segregation of species 1 and 2, the differences in dynamic characteristics between fine and coarse particles are explored. The normalized autocorrelation length scale, which is the ratio of propagation length of particle velocity fluctuations and particle diameter, is significantly different from fine to coarse particles. One notable feature is that two different flow regimes are found through the radial distribution function. Furthermore, the hydrodynamic stress and collision stress are defined to study the mechanism for the differences between fine and coarse particles. The results imply that the reason for the differences is that the collision effects go beyond the hydrodynamic effects with the increase in the Stokes number. |
| DOI | 10.1063/5.0157609 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001023449800013 |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Organization | National Natural Science Foundation of China [12132018] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA22000000] ; Youth Innovation Promotion Association of Chinese Academy of Sciences [2017027] |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Contributor | Zhang, Y (corresponding author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/92590 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.{Ren, Wan-Long, Zhang, Xu-Hui, Zhang, Yan, Li, Peng, Lu, Xiao-Bing} Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.{Ren, Wan-Long, Zhang, Xu-Hui, Lu, Xiao-Bing} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Ren WL,Zhang XH,Zhang Y,et al. Investigation of particle size impact on dense particulate flows in a vertical pipe[J]. PHYSICS OF FLUIDS,2023,35,7,:73302.Rp_Au:Zhang, Y (corresponding author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China. |
| APA | 任万龙,张旭辉,张岩,李鹏,&鲁晓兵.(2023).Investigation of particle size impact on dense particulate flows in a vertical pipe.PHYSICS OF FLUIDS,35(7),73302. |
| MLA | 任万龙,et al."Investigation of particle size impact on dense particulate flows in a vertical pipe".PHYSICS OF FLUIDS 35.7(2023):73302. |
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| Jp2023A193.pdf（2756KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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