The ultra-low Reynolds number airfoil wake

doi:10.1007/s00348-009-0713-7

CORC > 北京大学 > 工学院

	The ultra-low Reynolds number airfoil wake
	Alam, Md. Mahbub ; Zhou, Y. ; Yang, H. X. ; Guo, H. ; Mi, J.
刊名	流体力学实验
	2010
关键词	DISCRETE-VORTEX SIMULATION INCLINED FLAT-PLATE BLUFF-BODIES RECTANGULAR CYLINDERS CIRCULAR-CYLINDERS NUMERICAL-SIMULATION LAMINAR SEPARATION BOUNDARY-LAYER DYNAMIC STALL LEADING-EDGE
DOI	10.1007/s00348-009-0713-7
英文摘要	Lift force and the near wake of an NACA 0012 airfoil were measured over the angle (alpha) of attack of 0A degrees-90A degrees and the chord Reynolds number (Re (c) ), 5.3 x 10(3)-5.1 x 10(4), with a view to understand thoroughly the near wake of the airfoil at low- to ultra-low Re (c) . While the lift force is measured using a load cell, the detailed flow structure is captured using laser-Doppler anemometry, particle image velocimetry, and laser-induced fluorescence flow visualization. It has been found that the stall of an airfoil, characterized by a drop in the lift force, occurs at Re (c) a parts per thousand yen 1.05 x 10(4) but is absent at Re (c) = 5.3 x 10(3). The observation is connected to the presence of the separation bubble at high Re (c) but absence of the bubble at ultra-low Re (c) , as evidenced in our wake measurements. The near-wake characteristics are examined and discussed in detail, including the vortex formation length, wake width, spanwise vorticity, wake bubble size, wavelength of K-H vortices, Strouhal numbers, and their dependence on alpha and Re (c) .; Engineering, Mechanical; Mechanics; SCI(E); EI; 15; ARTICLE; 1; 81-103; 48
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/245334]
专题	工学院
推荐引用方式 GB/T 7714	Alam, Md. Mahbub,Zhou, Y.,Yang, H. X.,et al. The ultra-low Reynolds number airfoil wake[J]. 流体力学实验,2010.
APA	Alam, Md. Mahbub,Zhou, Y.,Yang, H. X.,Guo, H.,&Mi, J..(2010).The ultra-low Reynolds number airfoil wake.流体力学实验.
MLA	Alam, Md. Mahbub,et al."The ultra-low Reynolds number airfoil wake".流体力学实验 (2010).