An improved tip-loss correction based on vortex code results

Emmanuel Branlard, Kristian Dixon, Mac Gaunaa

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Abstract

Standard blade element momentum(BEM) codes use Prandtl’s tip-loss correction which relies on simplified vortex theory under the assumption of optimal operating condition and no wake expansion. A
new tip-loss correction for implementation in BEM codes has been developed using a lifting-line code to account for the effect of wake expansion, roll-up and distortion under any operating conditions. A
database of tip-loss corrections is established for further use in BEM codes. Using this model a more physical representation of the flow and hence a better assessment of the performance of the turbine by
BEM codes is expected.
Original languageEnglish
Title of host publicationProceedings of EWEA 2012 - European Wind Energy Conference & Exhibition
Number of pages9
PublisherEuropean Wind Energy Association (EWEA)
Publication date2012
Publication statusPublished - 2012
EventEWEC 2012 - European Wind Energy Conference & Exhibition - Copenhagen, Denmark
Duration: 16 Apr 201219 Apr 2012
http://events.ewea.org/annual2012/

Conference

ConferenceEWEC 2012 - European Wind Energy Conference & Exhibition
Country/TerritoryDenmark
CityCopenhagen
Period16/04/201219/04/2012
Internet address

Keywords

  • Tip-loss factor
  • Tip-loss correction
  • Vortex methods
  • Improved BEM
  • Bézier curve
  • Wake deformation

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  • Wind turbine tip-loss corrections

    Branlard, E. S. P.

    16/04/201130/09/2011

    Project: Research

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