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

: Vimalakanthan, K.; Schepers, J. Gerard; Shen, W.Z.; Rahimi, Hamid; Micallef, D.; Simao Ferreira, C.J.; Jost, E.; Klein, L.

Volltext ()

The Science of Making Torque from Wind, TORQUE 2018 : 20-22 June 2018, Milan, Italy
Bristol: IOP Publishing, 2018 (Journal of physics. Conference series 1037)
Art. 022028, 11.
International Conference "The Science of Making Torque from Wind" (TORQUE) <2018, Milan>
European Commission EC
AdVanced Aerodynamic Tools for lArge Rotors
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IWES ()

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.