Schall_KoGe. Final report

The following scientific and technical work objectives were pursued in the University of Stuttgart's sub-project: - Improved prediction of the dominant sound sources (inflow noise and trailing edge noise) on modern wind turbines in the higher frequency range (approx. 100-10 kHz) based on combined CFD-based simulations and aeroacoustic models. - CFD simulation of the flow around a wind turbine with a higher temporal resolution than before, taking into account the fluid-structure interaction in complex terrain to investigate the generation of acoustic sound waves in the low frequency range. - Evaluation of the influence of vortex generators (VG) on aeroacoustics, both in terms of their direct sound emission and in relation to the change in the trailing edge noise emission of the rotor due to changes in the boundary layer characteristics. - Analysis of physical processes in the generation and propagation of sound in complex terrain.