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

H. Rahimi, J.G. Schepers, W.Z. Shen, N. Ramos García, M.S. Schneider, D. Micallef, C.J. Simao Ferreira, E. Jost, L. Klein and I. Herráez

Renewable Energy, 2018, vol. 125, issue C, 866-876

Abstract: 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.

Keywords: Axial induction factor; Computational Fluid Dynamics (CFD); Angle of Attack (AoA); 10 MW wind turbine; Blade element momentum method (BEM); Engineering models (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (15)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:125:y:2018:i:c:p:866-876

DOI: 10.1016/j.renene.2018.03.018

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