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

Title

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

 Author

Timmer, W.A.

Faculty

Aerospace Engineering

 Department

Aerodynamics, Wind Energy & Propulsion

 Date

2010-06-28

 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.

 Subject

airfoil characteristics
lift-todrag ratio
high angles of attack

 To reference this document use:

http://resolver.tudelft.nl/uuid:7bc4ac3e-46d6-4113-8b47-2893ab0fe88e

 Publisher

European Wind Energy Association

 Source

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

 Part of collection

Institutional Repository

 Document type

conference paper

 Rights

(c) 2010 The Author(s)
Files
PDF Timmer_2010.pdf 200.91 KB
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