Conference paper
Quantification of the Effects of Using Slats on the Inner Part of a 10MW Rotor
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.
Language: | English |
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Publisher: | European Wind Energy Association (EWEA) |
Year: | 2012 |
Pages: | 919-930 |
Proceedings: | EWEC 2012 - European Wind Energy Conference & Exhibition |
Types: | Conference paper |
ORCIDs: | Gaunaa, Mac , Zahle, Frederik , Sørensen, Niels N. and Bak, Christian |