Aerodynamic characteristics of wind turbine blade airfoils at high angles-of-attack

Conference paper (2010)

Authors

Department
Aerodynamics, Wind Energy & Propulsion (Aerospace Engineering) (TU Delft)
Copyright: © 2010 The Author(s)
More Info
expand_more

Published Date

28-06-2010

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Source:

3rd EWEA Conference - Torque 2010: The Science of making Torque from Wind, Heraklion, Crete, Greece, 28-30 June 2010

Faculty

Aerospace Engineering

Department

Aerodynamics, Wind Energy & Propulsion

Abstract

Airfoil characteristics at deep stall angles were investigated. It appeared that the maximum drag coefficient as a function of the airfoil upwind y/c ordinate at x/c=0.0125 can be approximated by a straight line. The lift-drag ratios in deep stall of a number of airfoils with moderate lower surface thickness coincide. It was found that the lift-drag ratio of airfoils with leading edge separation is independent of aspect ratio. The lift-drag ratios of the various sections of a non-rotating and a rotating blade in deep stall coincide with the two-dimensional curve.

Files

Timmer_2010.pdf
(pdf | 0.196 Mb)