Study on the Control of Buffeting Noise of a Car Driving with the Front Side Window Open

Abstract

In order to reduce buffeting noise in the cab when a car was driving with the front side window is opener, the large eddy simulation method is used to simulate the flow around the car. Combined with the solution of buffeting noise of the side window, the influence factors of the rear-view mirror wake vortex of the buffeting noise are studied and the influence mechanism is analyzed. Then, to reduce the large buffeting noise of the vehicle, the corresponding control measures are proposed based on the destruction of the free shear layer and its vortex structure. By adding two kinds of deflectors on the triangle window area, the level of buffeting noise in the cab is reduced, and the reason of the reduction of buffeting noise is analyzed.