Numerical Investigation on the Interior Wind Noise of a Passenger Car
With the development of the automotive technology and electric vehicle, the contribution of the wind noise on the interior noise becomes the main source of noise. The main transfer path which the exterior excitation is transmitted through is the greenhouse panels and side windows. Simulating the wind noise transmitted into the vehicle accurately in the early development stage can be very challenging. The basic methodologies of this study were based on the Lighthill analogy; the exterior flow field around a passenger car was computed using unsteady Computational Fluid Dynamics (CFD) firstly and then a Finite Element Method (FEM) was used to compute the interior acoustic response. The major findings of this study include: 1) The Sound Pressure Level (SPL) response at driver’s ear locations is mainly induced by the turbulence pressure fluctuation; 2) Peaks were found over the full frequency range. It is found that the methodology used in this study could predict the interior wind noise induced by the exterior aerodynamic excitation in industry.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.3593216Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 306
 Crouse, B., Freed, D., Senthooran, S., Ullrich, F., Fertl, C., "Analysis of Underbody Windnoise Sources on a Production Vehicle using a Lattice Boltzmann Scheme," SAE Technical Paper 2007-01-2400, 2007.
 Moron, P., Hazir, A., Crouse, B., Powell, R., Neuhierl, B., Wiedemann, J., "Hybrid Technique for Underbody Noise Transmission of Wind Noise," SAE Technical Paper 2011-01-1700, 2011.
 Wang, Y., Gu, Z., Li, W., Lin, X., Les, A., "Evaluation of Aerodynamic Noise Generation by a Generic Side Mirror," World Academy of Science, Engineering and Technology 61 2010.
 Yao, H., L, Davidson., "Generation of interior cavity noise due to window vibration excited by turbulent flows past a generic side-view mirror," Physics of Fluids 30, 036104 (2018).
 Moron, P., Powell, R., Freed, D., Perot, F., Crouse, B., Neuhierl, B., Ullrich, F., Holl, M., Waibl, A., Fertl, C., "A CFD/SEA Approach for Prediction of Vehicle Interior Noise due to Wind Noise," SAE Technical Paper 2009-01-2203, 2009.
 Lepley, D., Graf, A., Powell, R., and Senthooran, S., "A Computational Approach to Evaluate the Vehicle Interior Noise from Greenhouse Wind Noise Sources," SAE Technical Paper 2010-01-0285, 2010.
 Dobrzynski W (1986) Wind induced interior and far field radiated exterior noise from automobiles. In vehicle aerodynamics, Von Karman Inst. for Fluid Dynamics lecture series, 1986.
 Van Herpe, F., D'Udekem, D., Jacqmot, J., and Kouzaiha, R., "Vibro-Acoustic Simulation of Side Windows and Windshield Excited by Realistic CFD Turbulent Flows Including Car Cavity," SAE Technical Paper 2012-01-1521, 2012.
 Schell, A. and Cotoni, V., "Prediction of Interior Noise in a Sedan Due to Exterior Flow," SAE Int. J. Passeng. Cars - Mech. Syst. 8(3): 1090-1096, 2015.
 Lighthill M J. On Sound Generated Aerodynamically I. General Theory (J). Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1952,211(1107):564.