Computational aero acoustics for vehicle applications

The eld of Aero Acoustics, which studies aerodynamically generated sound, has been around since the 1950's. In the beginning, the main focus was to make commercial airliners less noisy, but as the eld has matured, a wider range of applications has been studied. Consumer surveys on vehicles consistently rank wind noise as a top ten prob-lem, which has led the vehicle industry to invest time and money to decrease this problem. A deeper understanding of aero acoustics would not only be bene cial in problems like wind noise, but also for problems like climate system noise, exhaust system ows, and others. This thesis focuses mainly on the scalar wave equations pioneered by Lighthill. A thorough review, including the inherent limitations in each method, is conducted. The equation by Curle is identied as the one that meets the objectives of this study the best, and it is implemented and solved for an open cavity. Since no experimental data is available for this case, a Direc