Propulsive efficiency of a moving airfoil at transitional low Reynolds numbers

被引：0

作者：

Windte, Jan ^{[1
,2
]}

Radespiel, Rolf ^{[1
,2
,3
]}

机构：

[1] Technical University of Braunschweig, 38106 Braunschweig, Germany

[2] Institute of Fluid Mechanics

[3] AIAA

来源：

AIAA Journal | 2008年 / 46卷 / 09期

关键词：

Unsteady Reynolds-averaged Navier-Stokes simulations of the low-Reynolds-number flow past an SD7003 airfoil with combined plunge and pitch motion at Re = 60,000 are presented in which transition takes place across laminar separation bubbles. The numerical simulation approach includes transition prediction that is based on linear stability analysis applied to unsteady mean flow data. A parameter study for three reduced frequencies of k = 0.25, 0.5, and 1.0 is conducted. The drag losses encountered are quantified by a comparison with results using in viscid unsteady airfoil theory. High propulsive efficiencies are gained within the investigated thrust range, which goes to about 10 times the steady onflow airfoil drag;

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摘要：

Journal article (JA)

引用

页码：2165 / 2177