Abstract
Different vehicle manufacturers mount an air dam on the vehicle undercarriage just in front of the wheels. For better understanding of the noise generation mechanisms and flow induced vibrations directly at their source region, the acoustical effects in the interior of the vehicle will be correlated by the University of Applied Sciences Duesseldorf and BMW with the pressure fluctuations of the exterior of the vehicle. Steady state CFD calculations in the area of the rotating front wheel will be carried out for the positioning of the surface microphones and for a better understanding of the flow topology.
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