Final Conclusion






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The acoustic calculations were performed for a simplified car geometry as well as an even simpler example of a cylinder in the airflow was used to test the noise prediction. Because of extreme time and computational power needed, it turned out that it was not possible to solve the acoustics of the example of the car geometry even if it was simplified and modelled just in 2D. The reasons for this were investigated and discussed in the Final Project Report. However there was a very simple theory presented, how the dominant noise frequency could be roughly predicted for very simple examples based on the vortex shedding. It would be necessary to use even more simplifying assumptions like modelling just the sunroof in the airflow or meshing the whole domain with finer mesh and using parallel solver. This could obviously reduce the time demands significantly.




Cylinder Example


Car Geometry


Final Conclusion