Aerodynamic Control of Low-Reynolds-Number Airfoil with Leading-Edge Protuberances

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	Aerodynamic Control of Low-Reynolds-Number Airfoil with Leading-Edge Protuberances
	Zhang, M. M.; Wang, G. F.; Xu, J. Z.
刊名	AIAA JOURNAL
	2013-08-01
卷号	51 期号:8 页码:1960-1971
英文摘要	This paper presents an experimental investigation of the control of airfoil aerodynamics at a low Reynolds number of 5 x 10(4) within a wide range of attack angle alpha using a leading-edge-protuberance technique. The essence of the technique is to manipulate flow around the airfoil by replacing the straight leading edge of a baseline airfoil with a sinusoidal wavy airfoil. Whereas the lift and drag forces and the lift-to-drag ratio were measured using a three-component force balance, the flow was mainly measured using a particle-image velocimetry. The sinusoidal protuberances effectively suppressed airfoil stall, and the corresponding aerodynamic performance was impaired to some extent. Meanwhile, control significantly improved the airfoil aerodynamics in the poststall alpha region, for example, 16 < alpha < 70 deg, leading to a maximum 25.0 and 39.2% increase in lift coefficient and lift-to-drag ratio, respectively, and a maximum 20.0% decrease in drag coefficient. The protuberances may influence control performance in a similar way with low-profile vortex generators. The flow physics behind the observations were discussed in detail.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Aerospace
研究领域[WOS]	Engineering
关键词[WOS]	FLOW-CONTROL ; BOUNDARY-LAYER ; WIND-TUNNEL ; PERFORMANCE ; SEPARATION ; TRANSITION ; TURBULENCE ; TUBERCLES ; BLOCKAGE ; VEHICLES
收录类别	SCI
语种	英语
WOS记录号	WOS:000322557400014
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/98832]
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	Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, M. M.,Wang, G. F.,Xu, J. Z.. Aerodynamic Control of Low-Reynolds-Number Airfoil with Leading-Edge Protuberances[J]. AIAA JOURNAL,2013,51(8):1960-1971.
APA	Zhang, M. M.,Wang, G. F.,&Xu, J. Z..(2013).Aerodynamic Control of Low-Reynolds-Number Airfoil with Leading-Edge Protuberances.AIAA JOURNAL,51(8),1960-1971.
MLA	Zhang, M. M.,et al."Aerodynamic Control of Low-Reynolds-Number Airfoil with Leading-Edge Protuberances".AIAA JOURNAL 51.8(2013):1960-1971.