Characterizing three-dimensional features of vortex surfaces in the flow past a finite plate

doi:10.1063/1.5134551

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Characterizing three-dimensional features of vortex surfaces in the flow past a finite plate
	Tong WW 2; Yang Y(杨越)1,2,5; Wang SZ(王士召)3,4
刊名	PHYSICS OF FLUIDS
	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
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关键词	PROPULSIVE PERFORMANCE ; AERODYNAMIC FORCE ; WAKE STRUCTURE ; TAYLOR-GREEN ; EVOLUTION ; VORTICES ; FIELDS ; WINGS ; LIFT
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
内容类型	期刊论文
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.Peking Univ, CAPT, Beijing 100871, Peoples R China; 2.Peking Univ, Coll Engn, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, LNM, Inst Mech, Beijing 100190, Peoples R China; 5.Peking Univ, BIC ESAT, 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.