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

Bjarne Skovmose Kallesøe

doi:10.1002/we.413

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

Bjarne Skovmose Kallesøe

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

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.

Original language	English
Journal	Wind Energy
Volume	14
Issue number	2
Pages (from-to)	209-224
ISSN	1095-4244
DOIs	https://doi.org/10.1002/we.413
Publication status	Published - 2011

Keywords

Aeroelastic design methods
Wind Energy

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title = "Effect of steady deflections on the aeroelastic stability of a turbine blade",

abstract = "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 {\textcopyright} 2010 John Wiley \& Sons, Ltd.",

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N2 - 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.

AB - 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.

KW - Aeroelastic design methods

KW - Wind Energy

KW - Aeroelastiske designmetoder

KW - Vindenergi

U2 - 10.1002/we.413

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VL - 14

SP - 209

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JO - Wind Energy

JF - Wind Energy

IS - 2

ER -

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

Abstract

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