Open AccessTip loss corrections for wind turbine computations
Author(s) -
Shen Wen Zhong,
Mikkelsen Robert,
Sørensen Jens Nørkær,
Bak Christian
Publication year - 2005
Publication title -
wind energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.743
H-Index - 92
eISSN - 1099-1824
pISSN - 1095-4244
DOI - 10.1002/we.153
Subject(s) - computation , prandtl number , turbine , mechanics , momentum (technical analysis) , function (biology) , turbine blade , structural engineering , physics , engineering , aerospace engineering , computer science , heat transfer , algorithm , finance , evolutionary biology , economics , biology
As an essential ingredient in the blade element momentum theory, the tip loss effect of rotors plays an important role in the prediction of wind turbine performance. Various tip loss corrections based on the Prandtl tip loss function are analysed in the article. Comparisons with measurements and theoretical analyses show that existing tip loss correction models are inconsistent and fail to predict correctly the physical behaviour in the proximity of the tip. A new tip loss correction model is proposed that remedies the inconsistency. Comparisons between numerical and experimental data show that the new model results in much better predictions of the loading in the tip region. Copyright © 2005 John Wiley & Sons, Ltd.