Influence of nose perturbations on behaviors of asymmetric vortices over   slender body

CORC > 北京大学 > 工学院

	Influence of nose perturbations on behaviors of asymmetric vortices over slender body
	Chen, XR ; Deng, XY ; Wang, YK ; Liu, PW ; Gu, ZF
刊名	acta mechanica sinica
	2002
关键词	asymmetric vortex slender body of revolution bistable flow high angle of attack aerodynamics VORTEX ASYMMETRY OGIVE CYLINDER
英文摘要	The influence of nose perturbations on the behaviors of asymmetric vortices over a slender body with a three-caliber ogive nose is studied in this paper. The tests of a nose-disturbed slender body with surface pressure measurement were conducted at a low speed wind tunnel with subcritical Reynolds number of 1 x 10(5) at angle of attack alpha = 50degrees. The experiment results show that the behaviors and structure of asymmetric vortices over the slender body are mainly controlled by manual perturbation on the nose of body as, compared with. geometrical minute irregularities on the test model from the machining tolerances. The effect of the perturbation axial location on asymmetric vortices is the strongest if its location is near the model apex. There are four sensitive circumferential locations of manual perturbation at which bistable vortices over the slender body are switched by the perturbation. The flowfield near the reattachment line of lee side is more sensitive to the perturbation, because the saddle point to saddle point topological structure in this reattachment flowfield is unstable. Various types of perturbation do not change the perturbation effect on the behaviors of bistable asymmetric vortices.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000180359200003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Mechanical; Mechanics; SCI(E); 中国科学引文数据库(CSCD); 20; 6; 581-593; 18
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/256372]
专题	工学院
推荐引用方式 GB/T 7714	Chen, XR,Deng, XY,Wang, YK,et al. Influence of nose perturbations on behaviors of asymmetric vortices over slender body[J]. acta mechanica sinica,2002.
APA	Chen, XR,Deng, XY,Wang, YK,Liu, PW,&Gu, ZF.(2002).Influence of nose perturbations on behaviors of asymmetric vortices over slender body.acta mechanica sinica.
MLA	Chen, XR,et al."Influence of nose perturbations on behaviors of asymmetric vortices over slender body".acta mechanica sinica (2002).