Numerical Investigation of Tonal Noise at Automotive Side Mirrors due to Aeroacoustic Feedback
2020-01-1514
09/30/2020
- Event
- Content
- This paper describes the possibility to resolve aeroacoustic feedback with a commercial 2nd/3rd order finite volume CFD code [1]. After a first comparison to a NACA 0012 test case, tonal noise components of a realistic automotive side view mirror are validated with in-house wind tunnel measurements. A zonal RANS/LES approach is used to ensure a realistic flow around the exterior side mirror mounted on a Mercedes-Benz passenger car. The provided compressible large eddy simulations are using non-reflecting boundary conditions in combination with a sponge zone approach to reduce hydrodynamic fluctuations and are in great accordance to measurements. The possibility of localizing and investigating the underlying feedback mechanism enables the chance for a targeted design of different appropriate remedies, which are finally confirmed by means of experimental comparison.
- Pages
- 8
- Citation
- Schell, A., and Eiselt, M., "Numerical Investigation of Tonal Noise at Automotive Side Mirrors due to Aeroacoustic Feedback," SAE Technical Paper 2020-01-1514, 2020, https://doi.org/10.4271/2020-01-1514.