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H. Snel (1998)
Review of the present status of rotor aerodynamicsWind Energy, 1
W. Tiederman, T. Luchik, D. Bogard (1985)
Wall-layer structure and drag reductionJournal of Fluid Mechanics, 156
Nengsheng Bao, Haoming Ma, Zhiquan Ye (2000)
Experimental Study of Wind Turbine Blade Power Augmentation Using Airfoil Flaps, Including the Gurney FlapWind Engineering, 24
A. Seifert, Tomer Bachar, D. Koss, M. Shepshelovich, I. Wygnanski (1993)
Oscillatory Blowing: A Tool to Delay Boundary-Layer SeparationAIAA Journal, 31
K. Zaman, A. Bar-Sever, S. Mangalam (1987)
Effect of acoustic excitation on the flow over a low-Re airfoilJournal of Fluid Mechanics, 182
J. Anyiwo, D. Bushnell (1982)
Turbulence amplification in shock-wave boundary-layer interactionAIAA Journal, 20
(1995)
The effect of oscillatory blowing on a stalling airfoil
H. Snel (1998)
Review of the present status of rotor aerodynamics: Review of rotor aerodynamicsWind Energy, 1
A. Seifert, L. Pack (1999)
Oscillatory Control of Separation at High Reynolds NumbersAIAA Journal, 37
M. Kotb, H. Soliman (1991)
Performance analysis of a horizontal-axis wind turbine under non-uniform flow with swirlJournal of Wind Engineering and Industrial Aerodynamics, 37
(1994)
Theoretically and experimentally obtained performances of gurney - flap equipped wind turbine
G. Lachmann (1961)
Boundary layer and flow control: its principles and application
B. Storms, C. Jang (1993)
Lift enhancement of an airfoil using a Gurney flap and vortex generatorsJournal of Aircraft, 31
Z. Shijie, Y. Xin, Ye Dajun (2001)
Analysis of Turbulent Separated Flows for the NREL Airfoil Using Anisotropic Two-Equation Models at Higher Angles of AttackWind Engineering, 25
Optimum aerodynamic performance of a wind turbine blade demands that the angle of attack of the relative wind on the blade remains at its optimum value. For turbines operating at constant speed, a change in wind speed causes the angle of attack to change immediately and the aerodynamic performance to decrease. Even with variable speed rotors, intrinsic time delays and inertia have similar effects. Improving the efficiency of wind turbines under variable operating conditions is one of the most important areas of research in wind power technology. This paper presents findings of an experimental study in which an oscillating air jet located at the leading edge of the suction surface of an aerofoil was used to improve the aerodynamic performance. The mean air-mass flowing through the jet during each sinusoidal period of oscillation equalled zero; i.e. the jet both blew and sucked. Experiments investigated the effects of the frequency, momentum and location of the jet stream, and the profile of the turbine blade. The study shows significant increase in the lift coefficient, especially in the stall region, under certain conditions. These findings may have important implications for wind turbine technology.
Wind Engineering – SAGE
Published: Jun 1, 2005
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