Hybrid rotor models for the numerical optimisation of wind turbine farms

Two hybrid models are developed to predict the horizontal axis wind turbine aerodynamic performance. A three-dimensional Navier-Stokes code is coupled to a blade element method (BEM). This combination is applied in the two cases of models; actuator disc and actuator line. So to validate these models, computations are carried out in the case of NREL S809 Phase II wind turbine. The results are compared to experimental data from the NREL database and to other numerical computations. The computed aerodynamic performance by the two models is found to be in good agreement with experimental and numerical reference.