One important broadband noise generating mechanism in axial-flow compressors is the interaction between the turbulent inflow or a turbulent wake of a rotor blade and the leading edge (LE) of the downstream stator blade. Additionally, the interaction of turbulent vortices and the trailing edge (TE) of the airfoil generates noise as well. These mechanism are investigated in a research project at the Brandenburg University of Technology. To analyze broadband noise emission a test setup is installed in the aeroacoustic wind tunnel [1,2] which basically consists of a rod-airfoil-configuration. This configuration is suited to model noise generating mechanisms like turbulent inflow to blades and stator-rotor interactions.
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