An improved micro-vortex generator in supersonic flows

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	An improved micro-vortex generator in supersonic flows
	Zhang, Binbin 1,2; Zhao, Qingjun 1,3; Xiang, Xiaorong 1; Xu, Jianzhong 1
刊名	AEROSPACE SCIENCE AND TECHNOLOGY
	2015-12-01
卷号	47 页码:210-215
关键词	Micro-ramp Shock-boundary layer interaction Passive control
英文摘要	The micro-vortex generator has currently received much attention as a passive flow control device in supersonic flow. This paper investigates the induced velocity and the trajectory of the vortices generated by micro-vortex generators by using the point vortex model. The analysis suggests that counter-rotating vortices could adversely affect each other and this effect depends on the distance of the counter-rotating vortices. A novel micro-ramp for boundary layer control, called dissymmetric micro-ramp, was put forward on the basis of this analysis. The effect the dissymmetric micro-ramp was numerically studied at a free stream Mach number of 2.5 via RANS simulations. The vortices generated by these devices have similar path and dissipation with the ones generated by traditional devices. There is a constant drop of vorticity in the development and dissipation of these vortices. The vorticity in dissymmetric micro-ramps is stronger than that in standard micro-ramp. On the other hand, the vortex height from wall in dissymmetric micro-ramps is smaller than in standard micro-ramp. This effect also suggests that vortex in dissymmetric micro-ramp is apt to maintain in boundary layer. (C) 2015 Elsevier Masson SAS. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Aerospace
研究领域[WOS]	Engineering
关键词[WOS]	LAYER INTERACTION
收录类别	SCI
语种	英语
WOS记录号	WOS:000366538500021
公开日期	2016-03-15
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/112318]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Key Lab Light Duty Gas Turbine, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Binbin,Zhao, Qingjun,Xiang, Xiaorong,et al. An improved micro-vortex generator in supersonic flows[J]. AEROSPACE SCIENCE AND TECHNOLOGY,2015,47:210-215.
APA	Zhang, Binbin,Zhao, Qingjun,Xiang, Xiaorong,&Xu, Jianzhong.(2015).An improved micro-vortex generator in supersonic flows.AEROSPACE SCIENCE AND TECHNOLOGY,47,210-215.
MLA	Zhang, Binbin,et al."An improved micro-vortex generator in supersonic flows".AEROSPACE SCIENCE AND TECHNOLOGY 47(2015):210-215.