An improved tip-loss correction based on vortex code results

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2012

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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
StatePublished

Conference

ConferenceEWEA 2012 - European Wind Energy Conference & Exhibition
CountryDenmark
CityCopenhagen
Period16/04/1219/04/12
Internet addresshttp://events.ewea.org/annual2012/

Keywords

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