Sound propagation corrections in open jet wind tunnels

Noise produced by aircraft, wind turbines or drones is an increasing societal challenge. In order to develop more silent technology new silent designs are tested in wind tunnels. The wind tunnel environment, however, is different from the real world. Therefore, corrections are made to properly predict the acoustics of the application in the real world. Acoustic corrections, specifically aimed to be used in acoustic imaging techniques, are the topic of this thesis. The work is split into two parts. The first part concerns efficient mean flow corrections. The second part presents a method to improve the resolution of acoustic images when the acoustic waves propagate through a turbulent medium. The thesis begins with a background on sound propagation, including common correctionmodels used within acoustic imaging techniques. Furthermore, the fundamentals of acoustic imaging by means of the beamforming method are described.