The subject of the project is the reduction of flow noise in fans. Numerical simulations and complementary experimental investigations of the aeroacoustic properties of geometrically modified blades of an axial fan are carried out. These modifications can be e.g. a corrugated leading edge or a serrated trailing edge. The simulation approach is based on the partial detection of the turbulent flow field (LES) in conjunction with acoustic models for source analysis and far-field calculation. The calculation results are compared with PIV measurements of the flow field and an acoustic camera consisting of a ring array of microphones. A main goal of the project is the establishment of new innovative simulation techniques at the HSZG and the development of expertise in the field of high-performance computing on massively parallel computer systems.
