Evaluation of different methods for determining the angle of attack on wind turbine blades with CFD results under axial inflow conditions

RENEWABLE ENERGY

卷:125

Article

Rahimi, H.^1,2  Schepers, J. G.³  Shen, W. Z.⁴  Garcia, N. Ramos⁴  Schneider, M. S.⁵  Micallef, D.⁶  Ferreira, C. J. Simao⁷  Jost, E.⁸  Klein, L.⁸  Herraez, I.⁹ 

[1] Carl von Ossietzky Univ Oldenburg, Inst Phys, ForWind, Oldenburg, Germany

[2] Fraunhofer Inst Wind Energy Syst IWES, Oldenburg, Germany

[3] ECN Wind Energy Technol, Petten, Netherlands

[4] Tech Univ Denmark, Dept Wind Energy, Lyngby, Denmark

[5] German Aerosp Ctr DLR, Inst Aeroelast, Gttingen, Germany

[6] Univ Malta, Dept Environm Design, Msida, Malta

[7] Delft Univ Technol, Dept Wind Energy, Delft, Netherlands

[8] Univ Stuttgart, Inst Aerodynam & Gasdynam, Stuttgart, Germany

[9] Univ Appl Sci Emden Leer, Fac Technol, Emden, Germany

关键词: Axial induction factor;    Computational Fluid Dynamics (CFD);    Angle of Attack (AoA);    10 MW wind turbine;    Blade element momentum method (BEM);    Engineering models;   

DOI  :  10.1016/j.renene.2018.03.018

来源: Elsevier

【 摘 要 】

This work presents an investigation on different methods for the calculation of the angle of attack and the underlying induced velocity on wind turbine blades using data obtained from three-dimensional Computational Fluid Dynamics (CFD). Several methods are examined and their advantages, as well as shortcomings, are presented. The investigations are performed for two 10 MW reference wind turbines under axial inflow conditions, namely the turbines designed in the EU AVATAR and INNWIND.EU projects. The results show that the evaluated methods are in good agreement with each other at the mid span, though some deviations are observed at the root and tip regions of the blades. This indicates that CFD results can be used for the calibration of induction modeling for Blade Element Momentum (BEM) tools. Moreover, using any of the proposed methods, it is possible to obtain airfoil characteristics for lift and drag coefficients as a function of the angle of attack. (C) 2018 Elsevier Ltd. All rights reserved.

【 授权许可】

Free