Modelling complex terrain e ects for wind farm layout optimization

The ow over four analytical hill geometries was calculated by CFD RANS simulations. For each hill, the results were converted into numerical models that transform arbitrary undisturbed in ow pro les by rescaling the e ect of the obstacle. The predictions of such models are compared to full CFD results, rst for atmospheric boundary layer ow, and then for a single turbine wake in the presence of an isolated hill. The implementation of the models into the wind farm modelling software flapFOAM is reported, advancing their inclusion into a fully modular wind farm layout optimization routine.