Prediction of the Effect of Vortex Generators on Airfoil Performance

The Science of Making Torque from Wind 2014

Sørensen, Niels N.^1 ; Zahle, F.^1 ; Bak, C.^1 ; Vronsky, T.^2

Technical University of Denmark, Department of Wind Energy, Risø Campus, Frederiksborgvej 399, Roskilde 4000, Denmark^1

Vestas Wind Systems A/S, Central Denmark Region, Aarhus, Denmark^2

关键词: Airfoil performance;    Airfoil section;    Blade section;    Design phase;    Lift and drag;    Vortex generators;    Wind tunnel measurements;    Wind turbine industry;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/524/1/012019/pdf
DOI  :  10.1088/1742-6596/524/1/012019

来源: IOP

【 摘 要 】

Vortex Generators (VGs) are widely used by the wind turbine industry, to control the flow over blade sections. The present work describes a computational fluid dynamic procedure that can handle a geometrical resolved VG on an airfoil section. After describing the method, it is applied to two different airfoils at a Reynolds number of 3 million, the FFA- W3-301 and FFA-W3-360, respectively. The computations are compared with wind tunnel measurements from the Stuttgart Laminar Wind Tunnel with respect to lift and drag variation as function of angle of attack. Even though the method does not exactly capture the measured performance, it can be used to compare different VG setups qualitatively with respect to chord- wise position, inter and intra-spacing and inclination of the VGs already in the design phase.