车辆内部气流噪声预测方法

Prediction Method of Interior Aerodynamic Noise of an Automobile Cab

在风洞实验的基础上，提出了气流噪声向汽车内部传播的理论模型。采用格林函数法，研究了车外脉动压力透过板壁和孔隙向车内传播的途径，分析了板壁的振动和车内声场之间的耦合关系，给出了由外部脉动压力计算车内声场的计算公式。

Proposes a theoretical model for aerodynamic noise transmitting towards interior cab of an automobile on the basis of the wind experiment.Using Green function,the paper discusses that the outside fluctuation pressure transmits towards the cab through walls and holes and analyzes the coupling relation between the vibration of walls and the interior sound field.The calculation formula for the interior sound field from outside fluctuation pressure is also given.