Flutter performance of large-scale wind turbine blade with shallow-angled skins

Khazar Hayat, SungKyu Ha

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The application of shallow-angled skins with off-axis fiber angle less than 45°, increases the bending stiffness and strength of the large-scale wind turbine blade but reduces its torsional stiffnesses, making it susceptible to the classical flutter instability problem. Single-blade quasi-steady eigenvalue analyses using HAWCStab2 were performed to evaluate the flutter performance of a 5 MW pitch-regulated wind turbine blade with shallow-angled skins configurations. The results showed that the application of shallow-angled skin design concept to the 5 MW blade model does not pose the flutter instability problem.

Original languageEnglish
Pages (from-to)575-583
Number of pages9
JournalComposite Structures
Volume132
DOIs
StatePublished - 2015 Nov 5

Fingerprint

Wind turbines
Turbomachine blades
Skin
Stiffness
Fibers

Keywords

  • Aero-elasticity
  • Classical flutter
  • Large-scale blade
  • Shallow-angled skins

Cite this

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abstract = "The application of shallow-angled skins with off-axis fiber angle less than 45°, increases the bending stiffness and strength of the large-scale wind turbine blade but reduces its torsional stiffnesses, making it susceptible to the classical flutter instability problem. Single-blade quasi-steady eigenvalue analyses using HAWCStab2 were performed to evaluate the flutter performance of a 5 MW pitch-regulated wind turbine blade with shallow-angled skins configurations. The results showed that the application of shallow-angled skin design concept to the 5 MW blade model does not pose the flutter instability problem.",
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Flutter performance of large-scale wind turbine blade with shallow-angled skins. / Hayat, Khazar; Ha, SungKyu.

In: Composite Structures, Vol. 132, 05.11.2015, p. 575-583.

Research output: Contribution to journalArticle

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AU - Hayat, Khazar

AU - Ha, SungKyu

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AB - The application of shallow-angled skins with off-axis fiber angle less than 45°, increases the bending stiffness and strength of the large-scale wind turbine blade but reduces its torsional stiffnesses, making it susceptible to the classical flutter instability problem. Single-blade quasi-steady eigenvalue analyses using HAWCStab2 were performed to evaluate the flutter performance of a 5 MW pitch-regulated wind turbine blade with shallow-angled skins configurations. The results showed that the application of shallow-angled skin design concept to the 5 MW blade model does not pose the flutter instability problem.

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