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| Floating particles transport through the free surface vortex technique: A novel numerical study to assess the interaction among different scales of vortex structures | |
| Li, Zhixiang1,2; Chen, Huixiang1,2; Xu, Hui1,2; Feng, Jiangang1,2; Rossi, Mose3; Qian, Shangtuo1,2; Yang ZX(杨子轩)4; Kan, Kan2,5,6 | |
| Corresponding Author | Kan, Kan(kankan@hhu.edu.cn) |
| Source Publication | PHYSICS OF FLUIDS (IF:2.627[JCR-2018],2.84[5-Year]) |
| 2024-10-01 | |
| Volume | 36Issue:10Pages:12 |
| ISSN | 1070-6631 |
| Abstract | 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. |
| DOI | 10.1063/5.0232526 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001332644200014 |
| WOS Keyword | LAGRANGIAN COHERENT STRUCTURES ; LEVEL-SET ; DYNAMICS ; FLOW ; SIMULATION ; FIELD ; 3D |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Project | 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 |
| Funding Organization | 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 |
| Classification | 一类/力学重要期刊 |
| Ranking | 3+ |
| Contributor | Kan, Kan |
| Citation statistics | 正在获取...
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| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/96991 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Hohai Univ, Coll Agr Sci & Engn, Nanjing 210098, Peoples R China; 2.Hohai Univ, Coll Water Conservancy & Hydropower Engn, Nanjing 210098, Peoples R China; 3.Marche Polytech Univ, Dept Ind Engn & Math Sci DIISM, I-60131 Ancona, Italy; 4.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 5.Hohai Univ, Sch Elect & Power Engn, Nanjing 211100, Peoples R China; 6.Hohai Univ, Natl Engn Res Ctr Water Resources Efficient Utiliz, Nanjing 210098, Peoples R China |
| Recommended Citation 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.Rp_Au:Kan, Kan |
| 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. |
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