Floating particles transport through the free surface vortex technique: A novel numerical study to assess the interaction among different scales of vortex structures
文献类型：期刊论文
| 作者 | Li, Zhixiang5,6; Chen, Huixiang5,6; Xu, Hui5,6; Feng, Jiangang5,6; Rossi, Mose4; Qian, Shangtuo5,6; Yang, Zixuan3; Kan, Kan1,2,5 |
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2024-10-01 |
| 卷号 | 36期号:10页码:12 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0232526 |
| 通讯作者 | Kan, Kan(kankan@hhu.edu.cn) |
| 英文摘要 | Fat, oil, and grease (FOG) floating particles in the sump of sewage pumping stations will accumulate together to form rigid layers, resulting in failure for pump device. To overcome this, the free surface vortex (FSV) technique has been considered and applied to transport floating particles toward the submerged suction pump inlet. This paper investigates the potential of vortices as a means of downward motion of FOG. The entrainment capacity of FSV is investigated by numerical simulations using a coupled level-set and volume-of-fluid method. Two coherent structures are decomposed by proper orthogonal decomposition: FSV represented by the first two orders with high energy content and spiral vortex bands represented by low energy and high order models. The extracted ridges of the finite-time Lyapunov exponent (FTLE) delineate different regions of the flow field and effectively capture the evolution of Lagrangian coherent structures. The floating particles in the sump are first caught by the dividing line formed by the FTLE ridges, mixed in the entrainment zone, and then merged into the vortex. The enstrophy production term dominates the development of vorticity. Subject to the influence of flow velocity gradients, both radial and tangential vortices undergo a transition into axial vortices. This transformation enhances the vortex's capacity to entrain particles within the vortex core area, leading to their rapid inward spiraling toward the vortex center and eventual expulsion due to the vortex's entrainment effect. |
| WOS关键词 | LAGRANGIAN COHERENT STRUCTURES ; LEVEL-SET ; DYNAMICS ; FLOW ; SIMULATION ; FIELD ; 3D |
| 资助项目 | National Natural Science Foundation of China10.13039/501100001809[52379086] ; National Natural Science Foundation of China10.13039/501100001809[52476028] ; National Natural Science Foundation of China[BZ2023047] ; Jiangsu Innovation Support Program for International Science and Technology Cooperation[2022T150185] ; Jiangsu Innovation Support Program for International Science and Technology Cooperation[2022M711021] ; Postdoctoral Research Foundation of China ; High-Performance Computing Platform at Hohai University |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001332644200014 |
| 资助机构 | National Natural Science Foundation of China10.13039/501100001809 ; National Natural Science Foundation of China ; Jiangsu Innovation Support Program for International Science and Technology Cooperation ; Postdoctoral Research Foundation of China ; High-Performance Computing Platform at Hohai University |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96990]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Kan, Kan |
| 作者单位 | 1.Hohai Univ, Natl Engn Res Ctr Water Resources Efficient Utiliz, Nanjing 210098, Peoples R China 2.Hohai Univ, Sch Elect & Power Engn, Nanjing 211100, Peoples R China 3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 4.Marche Polytech Univ, Dept Ind Engn & Math Sci DIISM, I-60131 Ancona, Italy 5.Hohai Univ, Coll Water Conservancy & Hydropower Engn, Nanjing 210098, Peoples R China 6.Hohai Univ, Coll Agr Sci & Engn, Nanjing 210098, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Zhixiang,Chen, Huixiang,Xu, Hui,et al. Floating particles transport through the free surface vortex technique: A novel numerical study to assess the interaction among different scales of vortex structures[J]. PHYSICS OF FLUIDS,2024,36(10):12. |
| APA | Li, Zhixiang.,Chen, Huixiang.,Xu, Hui.,Feng, Jiangang.,Rossi, Mose.,...&Kan, Kan.(2024).Floating particles transport through the free surface vortex technique: A novel numerical study to assess the interaction among different scales of vortex structures.PHYSICS OF FLUIDS,36(10),12. |
| MLA | Li, Zhixiang,et al."Floating particles transport through the free surface vortex technique: A novel numerical study to assess the interaction among different scales of vortex structures".PHYSICS OF FLUIDS 36.10(2024):12. |
入库方式： OAI收割
来源：力学研究所
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