Authors: Ivan Dobrev; Fawaz Massouh; Asif Memon
Addresses: Arts et Métiers-Paristech, 151, bd L'Hôpital, Paris 75013, France ' Arts et Métiers-Paristech, 151, bd L'Hôpital, Paris 75013, France ' Arts et Métiers-Paristech, 151, bd L'Hôpital, Paris 75013, France
Abstract: An improved model of an actuator surface is proposed, representing the flow around a wind turbine. This model was developed in conjunction with a Navier-Stokes solver using a blade element method for the calculation of power and wake development. Blades have been replaced with thin surfaces, and a boundary condition of 'pressure discontinuity' has been applied with rotor inflow and blade-section characteristics. The proposed improvement consists of applying tangential body forces along the chord, in addition to normal body forces resulting from pressure discontinuity along the blade cross-section. The proposed model has been validated for the flow around a horizontal-axis wind turbine. The results obtained from the proposed model are compared with the experimental results obtained from PIV-wind tunnel techniques. The comparison has displayed the necessity of the proposed model for accurate reproduction of the wake behind rotor. The rapidity of calculation, in comparison to full-geometry modelling, appears to be promising for wind farm simulations.
Keywords: wind turbines; wake; particle image velocimetry; PIV; flow; turbine rotors; wind energy; wind power; modelling; actuator surfaces; wind farm simulation; wind farms.
International Journal of Engineering Systems Modelling and Simulation, 2013 Vol.5 No.1/2/3, pp.137 - 146
Available online: 21 Feb 2013 *Full-text access for editors Access for subscribers Purchase this article Comment on this article