The change of airflow convective accelerating factor to the effect of fan noise is analyzed &calculated according to the mechanism of aerodynamic noise generated in airflow field.

• 根据空气流场中空气动力性噪声的产生机理，分析并计算了离心式通风机叶轮中，气流相对加速度系数的变化对风机噪声的影响。