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Journal article

Effect of steady deflections on the aeroelastic stability of a turbine blade

By Kallesøe, Bjarne Skovmose1,2,3

From

Aeroelastic Design, Wind Energy Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1

Wind Energy Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2

Risø National Laboratory for Sustainable Energy, Technical University of Denmark3

This paper deals with effects of geometric non-linearities on the aeroelastic stability of a steady-state defl ected blade. Today, wind turbine blades are long and slender structures that can have a considerable steady-state defl ection which affects the dynamic behaviour of the blade. The fl apwise blade defl ection causes the edgewise blade motion to couple to torsional blade motion and thereby to the aerodynamics through the angle of attack.

The analysis shows that in the worst case for this particular blade, the edgewise damping can be decreased by half. Copyright © 2010 John Wiley & Sons, Ltd.

Language: English
Publisher: John Wiley & Sons, Ltd.
Year: 2011
Pages: 209-224
ISSN: 10991824 and 10954244
Types: Journal article
DOI: 10.1002/we.413
Keywords

Aeroelastic design methods Aeroelastiske designmetoder Vindenergi Wind Energy

Other keywords

aeroelasticity stability analysis

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