Abstract:
Acoustic noise disturbance is one of the major factors which slows wind farm development near urban areas. This emphasises the importance of accurate estimation of the noise levels before the production and installation of wind turbines. In the present work, a Large Eddy Simulation (LES) of the region of the blade with the strongest acoustic sources, based on Oerlemans' acoustic camera measurements, is carried using a computational domain of an annulus section, which leads to a significant reduction of computational expense. The Ffowcs-Williams and Hawkings (FWH) acoustic analogy is used to predict the far field sound. The numerical results for the CART-2 wind turbine blade show good agreement with the available experimental data.