Quantification of the Effects of Using Slats on the Inner Part of a 10MW Rotor

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


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The present work attempts at quantifying the effects of using slats on the inner part of a modern multi-MW rotor as a post-fix to increase power production. In the process of doing this, the main behavior of the underlying physics is illuminated using a simplified BEM approach, and the effect of the lift and drag forces on local and integral power production and thrust is shown in a clear way. Two different methods (a BEM based and a free wake lifting line method) for determining angles of attack and lift coefficients corresponding to a specific loading on the inner part of the rotor are shown, and the results are compared. For the design of the slats, a 2D CFD based optimization approach is shown, and the final results from the algorithm for four specific inner airfoil sections on
the multi-MW rotor is shown. Finally, the impact of the alteration of the airfoil section force characteristics are shown in the design point using both a BEM based and a free wake lifting line method, and BEM based results are used to asses the effects of the addition of the slats on the annual energy production.
Original languageEnglish
Title of host publicationProceedings of EWEA 2012 - European Wind Energy Conference & Exhibition
Number of pages12
PublisherEuropean Wind Energy Association (EWEA)
Publication date2012
StatePublished - 2012
EventEWEA 2012 - European Wind Energy Conference & Exhibition - Copenhagen, Denmark


ConferenceEWEA 2012 - European Wind Energy Conference & Exhibition
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