Evaluation of different methods of determining the angle of attack on wind turbine blades under yawed inflow conditions

Journal article (2018)

Authors

K. Vimalakanthan ECN Solar Energy
J.G. Schepers ECN Solar Energy
W. Z. Shen Technical University of Denmark (DTU)
H. Rahimi Fraunhofer Institute for Wind Energy Systems (IWES), University of Oldenburg
D. Micallef University of Malta
Carlos Ferreira Wind Energy - Aerospace Engineering
E. Jost University of Stuttgart
L. Klein University of Stuttgart
Research Group
Wind Energy (Aerospace Engineering) (TU Delft)
Copyright: © 2018 K. Vimalakanthan, J.G. Schepers, W. Z. Shen, H. Rahimi, D. Micallef, Carlos Ferreira, E. Jost, L. Klein
DOI: https://doi.org/10.1088/1742-6596/1037/2/022028
More Info
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Published Date

19-06-2018

Language

English

Faculty

Aerospace Engineering

Department

Flow Physics and Technology

Research Group

Wind Energy

Abstract

As part of the AVATAR and Mexnext projects, this study compares several methods used to derive lifting line variables from CFD simulations of the MEXICO rotor in yawed inflow. The results from six partners within the AVATAR/Mexnext consortium using five different methods of extraction were compared. Overall comparison of the induced velocities at the mid and tip parts of blade shows fairly good agreement between the tested methods, where the derived angle of attack differs within 1°, within the linear range this accounts to 10% uncertainty on the aerodynamic forces. The presented comparison shows inadequate agreement between the methods for application towards the root.