风扇/压气机转子叶片定常力气动噪声数值研究
NUMERICAL PREDICTION OF STEADY FORCE NOISE ON A COMPRESSOR ROTOR BLADE
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摘要: 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。Abstract: Sources of compressor noise are usually considered as multiple pure tone noise,interaction noise and broadband noise.In the paper,the noise propagation equation of steady force on the compressor rotor blade is derived.The numerical results are compared with the WP 11 compressor rotor acoustical experiment.The theoretical and experimental investigations indicate that the steady force noise on the compressor rotor blalde is an important source of the compressor noise.
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