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Numerical Analysis of Sunroof Buffeting using STAR-CCM+
Satish Kumar B(사티쉬 본투),Fred Mendonca(프레드 멘돈카),Ghuiyeon Kim(김귀연),Young R Back(백영렬) 한국소음진동공학회 2014 한국소음진동공학회 논문집 Vol.24 No.3
CFD flow simulation of vehicles with open sunroof and passenger window help the automotive OEM(original equipment manufacturer) to identify the low frequency noise levels in the cabin. The lock-in and lock-off phenomena observed in the experimental studies of sunroof buffeting is well predicted by CFD speed sweep calculations over the operating speed range of the vehicle. The trend of the shear layer oscillation frequency with vehicle speed is also well predicted. The peak SPL from the CFD calculation has a good compromise with the experimental value after incorporating the real world effects into the CFD model by means of artificial compressibility and damping correction. The entire process right from modeling to flow analysis as well as acoustic analysis has been performed within the single environment i.e., STAR-CCM+.