Experimental study of flow separation control on a low-Re airfoil using leading-edge protuberance method

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	Experimental study of flow separation control on a low-Re airfoil using leading-edge protuberance method
	Zhang, M. M.; Wang, G. F.; Xu, J. Z.
刊名	EXPERIMENTS IN FLUIDS
	2014-04-01
卷号	55 期号:4
英文摘要	An experimental study of flow separation control on a low-Rec airfoil was presently investigated using a newly developed leading-edge protuberance method, motivated by the improvement in the hydrodynamics of the giant humpback whale through its pectoral flippers. Deploying this method, the control effectiveness of the airfoil aerodynamics was fully evaluated using a three-component force balance, leading to an effectively impaired stall phenomenon and great improvement in the performances within the wide post-stall angle range (22 degrees-80 degrees). To understand the flow physics behind, the vorticity field, velocity field and boundary layer flow field over the airfoil suction side were examined using a particle image velocimetry and an oil-flow surface visualization system. It was found that the leading-edge protuberance method, more like low-profile vortex generator, effectively modified the flow pattern of the airfoil boundary layer through the chordwise and spanwise evolutions of the interacting streamwise vortices generated by protuberances, where the separation of the turbulent boundary layer dominated within the stall region and the rather strong attachment of the laminar boundary layer still existed within the post-stall region. The characteristics to manipulate the flow separation mode of the original airfoil indicated the possibility to further optimize the control performance by reasonably designing the layout of the protuberances.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Mechanical ; Mechanics
研究领域[WOS]	Engineering ; Mechanics
关键词[WOS]	LOW-REYNOLDS-NUMBER ; WIND-TURBINE ; PERFORMANCE ; AERODYNAMICS ; TUBERCLES ; FLIPPERS ; BLOCKAGE ; SURFACES ; TUNNEL
收录类别	SCI
语种	英语
WOS记录号	WOS:000334687800011
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/106019]
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.. Experimental study of flow separation control on a low-Re airfoil using leading-edge protuberance method[J]. EXPERIMENTS IN FLUIDS,2014,55(4).
APA	Zhang, M. M.,Wang, G. F.,&Xu, J. Z..(2014).Experimental study of flow separation control on a low-Re airfoil using leading-edge protuberance method.EXPERIMENTS IN FLUIDS,55(4).
MLA	Zhang, M. M.,et al."Experimental study of flow separation control on a low-Re airfoil using leading-edge protuberance method".EXPERIMENTS IN FLUIDS 55.4(2014).