%0 Tesis de Pregrado %A McBride, Sterling %E Chiriboga, Patricio (dir) %I Quito: USFQ, 2015 %D 2015 %G %T Wind power and sound generation aero-acoustic noise prediction for wind turbines %U http://repositorio.usfq.edu.ec/handle/23000/4141 %X The noise produced by wind turbines has become a matter of concern during the last few years, especially since larger wind turbines are being built and some of them near populated areas. The main purpose of this thesis is to create a model that predicts the overall A-weighted sound pressure levels on a spherical grid around a wind turbine. In this case, the wind turbine used for modeling was Nordtank NTK 500/4, and in order to obtain results, experimental wind tunnel airfoil noise data was used. The obtained results show that the overall A-weighted sound pressure levels on the sphere grid surrounding the wind turbine have maximum values that are around 35 [dBa] and minimum of 0[dBa]. The highest values are located on the poles of the sphere, parallel to the plain of rotation of the blades. The lowest values are located at the center of the sphere, perpendicular to the plain of rotation of the blades. Additionally, it was determined that as the blades of the wind turbine rotate, the noise is characterized by an oscillating behavior.