Simulation and Design of Au-tomobile Sunroof Buffeting Noise Control

This paper presents the success story of an application of Computational Fluid Dynamics (CFD) analysis for automotive sunroof buffeting simulation and noise control design. Computational analyses of flow over an open sunroof of a car are performed to study the buffeting phenomenon and to determine the buffeting noise magnitude and frequency. Computations are performed for sunroofs with two types of buffeting noise control mechanisms. Numerical predictions are compared with the wind tunnel measurements. It is shown that CFD analysis has great potential for sunroof design and development