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	Mechanism for influence of nose bluntness on asymmetric vortices
	Wang Gang ; Liang Xin-Gang
	2010-05-07 ; 2010-05-07
关键词	Theoretical or Mathematical/ confined flow external flows flow separation flow simulation vortices/ nose bluntness asymmetric vortices pressure distributions roll angles blunted-nose slender body numerical simulation flow structures U-shaped horseshoe vortex surface flow separation shear layer/ A4730 Rotational flow, vortices, buoyancy and other flows involving body forces A4760 Flows in ducts, channels, and conduits A4710 General fluid dynamics theory, simulation and other computational methods
中文摘要	Pressure distributions on slender bodies are measured at various roll angles; it is found that the side loads on the blunted-nose slender body are as small as one-third of that on a pointed-nose one, or even zero at some roll angles. Numerical simulation shows that different flow structures are generated on the leeside of the bodies with different noses. The results confirm that a structure of U-shaped horseshoe vortex develops on the top of the blunted nose due to the closed type of surface flow separation. The shear layer separated from the nose is entrapped into the horseshoe vortex core and forms two main vortices on the two sides of the body. The function of this structure is to hold in the two main nose vortices and to restrict the emergence of asymmetry.
语种	英语 ; 英语
出版者	Chinese Phys. Soc ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/15986]
专题	清华大学
推荐引用方式 GB/T 7714	Wang Gang,Liang Xin-Gang. Mechanism for influence of nose bluntness on asymmetric vortices[J],2010, 2010.
APA	Wang Gang,&Liang Xin-Gang.(2010).Mechanism for influence of nose bluntness on asymmetric vortices..
MLA	Wang Gang,et al."Mechanism for influence of nose bluntness on asymmetric vortices".(2010).

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