From Exterior Wind Noise Loads to Interior Cabin Noise: A Validation Study of a Generic Automotive Vehicle 2015-01-2328
The object of the validation study presented in this paper is a generic vehicle, the so-called SAE body, developed by a consortium of German car manufacturers (Audi, Daimler, Porsche, Volkswagen). Many experiments have been performed by the abovementioned consortium on this object in the past to investigate its behavior when exposed to fluid flow. Some of these experiments were used to validate the simulation results discussed in the present paper.
It is demonstrated that the simulation of the exterior flow is able to represent the transient hydrodynamic structures and at the same time both the generation of the acoustic sources and the propagation of the acoustic waves. Performing wave number filtering allows to identify the acoustic phenomena and separate them from the hydrodynamic effects.
In a next step, the noise transferred to the interior of the cabin through the glass panel was calculated, using a Statistical Energy Analysis approach. It is shown that the simulated results correspond well with experiments.
Citation: Neuhierl, B., Senthooran, S., Toppinga, R., Jäger, A. et al., "From Exterior Wind Noise Loads to Interior Cabin Noise: A Validation Study of a Generic Automotive Vehicle," SAE Int. J. Passeng. Cars - Mech. Syst. 8(3):1075-1081, 2015, https://doi.org/10.4271/2015-01-2328. Download Citation
Barbara Neuhierl, Sivapalan Senthooran, Reinier Toppinga, Anke Jäger, Maarten Brink, Timo Lemke, Philippe Moron, Raghu Mutnuri
Exa Corporation, Daimler AG, Porsche AG
SAE 2015 Noise and Vibration Conference and Exhibition
SAE International Journal of Passenger Cars - Mechanical Systems-V124-6EJ, SAE International Journal of Passenger Cars - Mechanical Systems-V124-6