WASET
	%0 Journal Article
	%A M. R. Soltani and  M. Seddighi and  M. Mahmoudi
	%D 2008
	%J International Journal of Aerospace and Mechanical Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 16, 2008
	%T The Comparison of Form Drag and Profile Dragof a Wind Turbine Blade Section in Pitching Oscillation
	%U https://publications.waset.org/pdf/13865
	%V 16
	%X Extensive wind tunnel tests have been conducted to
investigate the unsteady flow field over and behind a 2D model of a
660 kW wind turbine blade section in pitching motion. The surface
pressure and wake dynamic pressure variation at a distance of 1.5
chord length from trailing edge were measured by pressure
transducers during several oscillating cycles at 3 reduced frequencies
and oscillating amplitudes. Moreover, form drag and linear
momentum deficit are extracted and compared at various conditions.
The results show that the wake velocity field and surface pressure of
the model have similar behavior before and after the airfoil beyond
the static stall angle of attack. In addition, the effects of reduced
frequency and oscillation amplitudes are discussed.
	%P 455 - 462