Characterizing three-dimensional features of vortex surfaces in the flow past a finite plate
文献类型：期刊论文
| 作者 | Tong WW5; Yang Y(杨越)3,4,5 ; Wang SZ(王士召)1,2
|
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2020 |
| 卷号 | 32期号:1页码:15 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/1.5134551 |
| 通讯作者 | Yang, Yue(yyg@pku.edu.cn) |
| 英文摘要 | We extend the vortex-surface field (VSF), a Lagrangian-based structure identification method, to investigate vortex dynamics in flows past a plate simulated by the immersed boundary method. As an example, the VSF evolution characterizes the three-dimensional features of vortex surfaces in the flow past a finite plate at the Reynolds number of 300, aspect ratio of 2, and angle of attack of 30 degrees. The VSF isosurface displays that near-plate vortex surfaces first roll up from plate edges and then evolve into hairpinlike structures near the leading edge and semiring structures near plate tips and in the wake. We quantitatively distinguish two types of vortical structures by the vanishing streamwise vorticity on VSF isosurfaces and refer them to as the leading edge vortex (LEV) and the tip vortex (TIV). Based on circulations through cross sections of vortex surfaces, we demonstrate that the lift generated from the LEV is suppressed by the finite growth of TIVs. In the wake region, we quantify the geometry of helical vortex lines in TIVs and the contribution of the helical vorticity component to the streamwise vortical impulse. Published under license by AIP Publishing. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | PROPULSIVE PERFORMANCE ; AERODYNAMIC FORCE ; WAKE STRUCTURE ; TAYLOR-GREEN ; EVOLUTION ; VORTICES ; FIELDS ; WINGS ; LIFT |
| 资助项目 | National Natural Science Foundation of China[91952108] ; National Natural Science Foundation of China[11925201] ; National Natural Science Foundation of China[91841302] |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000525847200006 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | Yang, Yue |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/81861]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, LNM, Inst Mech, Beijing 100190, Peoples R China; 3.Peking Univ, BIC ESAT, Beijing 100871, Peoples R China; 4.Peking Univ, CAPT, Beijing 100871, Peoples R China; 5.Peking Univ, Coll Engn, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Tong WW,Yang Y,Wang SZ. Characterizing three-dimensional features of vortex surfaces in the flow past a finite plate[J]. PHYSICS OF FLUIDS,2020,32(1):15. |
| APA | Tong WW,杨越,&王士召.(2020).Characterizing three-dimensional features of vortex surfaces in the flow past a finite plate.PHYSICS OF FLUIDS,32(1),15. |
| MLA | Tong WW,et al."Characterizing three-dimensional features of vortex surfaces in the flow past a finite plate".PHYSICS OF FLUIDS 32.1(2020):15. |
入库方式： OAI收割
来源：力学研究所
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