Wind Energ. Sci., 3, 1-9, 2018
https://doi.org/10.5194/wes-3-1-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research articles
17 Jan 2018
Extraction of the wake induction and angle of attack on rotating wind turbine blades from PIV and CFD results
Iván Herráez1, Elia Daniele2, and J. Gerard Schepers3 1Faculty of Technology, University of Applied Sciences Emden/Leer, Constantiaplatz 4, 26723, Emden, Germany
2Fraunhofer Institute for Wind Energy and Energy System Technology (IWES), Küpkersweg 70, 26129, Oldenburg, Germany
3Energy Research Center of the Netherlands (ECN), Wind Energy Technology, Westerduinweg 3, 1755 LE Petten, the Netherlands
Abstract. The analysis of wind turbine aerodynamics requires accurate information about the axial and tangential wake induction as well as the local angle of attack along the blades. In this work we present a new method for obtaining them conveniently from the velocity field. We apply the method to the New Mexico particle image velocimetry (PIV) data set and to computational fluid dynamics (CFD) simulations of the same turbine. This allows the comparison of experimental and numerical results of the mentioned quantities on a rotating wind turbine. The presented results open up new possibilities for the validation of numerical rotor models.

Citation: Herráez, I., Daniele, E., and Schepers, J. G.: Extraction of the wake induction and angle of attack on rotating wind turbine blades from PIV and CFD results, Wind Energ. Sci., 3, 1-9, https://doi.org/10.5194/wes-3-1-2018, 2018.
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Short summary
Several methods have been proposed in the past for extracting the blade performance of wind turbines from simulations. In this work, we present a new method that allows obtaining those data easily not only from simulation results but also from flow measurements. We apply the method to both experiments and simulations of a well-known wind turbine model. The results provide insight into the wind turbine aerodynamics and open up new possibilities for the validation of simulation models.
Several methods have been proposed in the past for extracting the blade performance of wind...
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