Effect of Geometric Uncertainties on the Aerodynamic Characteristic of Offshore Wind Turbine Blades

Publikation: Beitrag in FachzeitschriftKonferenzaufsatz in FachzeitschriftForschungPeer-Review

Autorschaft

  • Benedikt Ernst
  • Henning Schmitt
  • Jörg R. Seume
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Details

OriginalspracheEnglisch
Aufsatznummer012033
FachzeitschriftJournal of Physics: Conference Series
Jahrgang555
Ausgabenummer1
PublikationsstatusVeröffentlicht - 2014
Veranstaltung4th Scientific Conference on the Science of Making Torque from Wind - Oldenburg, Deutschland
Dauer: 9 Okt. 201211 Okt. 2012

Abstract

Offshore wind turbines operate in a complex unsteady flow environment which causes unsteady aerodynamic loads. The unsteady flow environment is characterized by a high degree of uncertainty. In addition, geometry variations and material imperfections also cause uncertainties in the design process. Probabilistic design methods consider these uncertainties in order to reach acceptable reliability and safety levels for offshore wind turbines. Variations of the rotor blade geometry influence the aerodynamic loads which also affect the reliability of other wind turbine components. Therefore, the present paper is dealing with geometric uncertainties of the rotor blades. These can arise from manufacturing tolerances and operational wear of the blades. First, the effect of geometry variations of wind turbine airfoils on the lift and drag coefficients are investigated using a Latin hypercube sampling. Then, the resulting effects on the performance and the blade loads of an offshore wind turbine are analyzed. The variations of the airfoil geometry lead to a significant scatter of the lift and drag coefficients which also affects the damage-equivalent flapwise bending moments. In contrast to that, the effects on the power and the annual energy production are almost negligible with regard to the assumptions made.

ASJC Scopus Sachgebiete

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Effect of Geometric Uncertainties on the Aerodynamic Characteristic of Offshore Wind Turbine Blades. / Ernst, Benedikt; Schmitt, Henning; Seume, Jörg R.
in: Journal of Physics: Conference Series, Jahrgang 555, Nr. 1, 012033, 2014.

Publikation: Beitrag in FachzeitschriftKonferenzaufsatz in FachzeitschriftForschungPeer-Review

Ernst, B, Schmitt, H & Seume, JR 2014, 'Effect of Geometric Uncertainties on the Aerodynamic Characteristic of Offshore Wind Turbine Blades', Journal of Physics: Conference Series, Jg. 555, Nr. 1, 012033. https://doi.org/10.1088/1742-6596/555/1/012033
Ernst, B., Schmitt, H., & Seume, J. R. (2014). Effect of Geometric Uncertainties on the Aerodynamic Characteristic of Offshore Wind Turbine Blades. Journal of Physics: Conference Series, 555(1), Artikel 012033. https://doi.org/10.1088/1742-6596/555/1/012033
Ernst B, Schmitt H, Seume JR. Effect of Geometric Uncertainties on the Aerodynamic Characteristic of Offshore Wind Turbine Blades. Journal of Physics: Conference Series. 2014;555(1):012033. doi: 10.1088/1742-6596/555/1/012033
Ernst, Benedikt ; Schmitt, Henning ; Seume, Jörg R. / Effect of Geometric Uncertainties on the Aerodynamic Characteristic of Offshore Wind Turbine Blades. in: Journal of Physics: Conference Series. 2014 ; Jahrgang 555, Nr. 1.
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