Proceedings of the ISMA2010 International Conference on Noise and Vibration Engineering pages:2331-2350
ISMA2010 location:Leuven, Belgium date:20-23 September 2010
This paper studies the feasibility of acquiring the multiple
source-receiver transfer functions for the prediction of pass-by noise Sound Pressure Level (SPL) of vehicles with the Fast Multipole Boundary Element Method (FMBEM). Employing measurements and simulations, the influence of
frequency resolution, mesh density, mesh accuracy and solver accuracy on the computation time and on the overall SPL and the third octave band SPL is investigated. It is concluded that pass-by noise estimates with an accuracy of
about 4~dB within a computation time of less than one day can be achieved in the near future.