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从考虑了固体边界影响和均匀介质影响后的广义 Lighthill方程出发 ,采用管道声学模型导出了风扇 /压气机转子叶片定常力气动噪声传播方程 ,并通过涡喷 11压气机单转子声学实验进行了数值模拟。结果表明 ,叶片定常力产生的气动噪声对风扇 /压气机总噪声级有重要作用。
Based on the generalized Lighthill equation, which takes into account the effect of solid boundary and the influence of uniform medium, the aerodynamic noise propagation equation of the fan / compressor rotor blade under constant force is derived by the pipeline acoustic model. The numerical results simulation. The results show that the aerodynamic noise generated by the constant blade force plays an important role in the fan / compressor total noise level.