Conference paper
An improved tip-loss correction based on vortex code results
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.
Language: | English |
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Publisher: | European Wind Energy Association (EWEA) |
Year: | 2012 |
Proceedings: | EWEC 2012 - European Wind Energy Conference & Exhibition |
Types: | Conference paper |
ORCIDs: | Branlard, Emmanuel and Gaunaa, Mac |