涡轮风扇发动机风扇噪声管道压力模态识别原理

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涡轮风扇发动机风扇噪声的量化分析包括直接建模分析和试验模型分析。基于涡轮风扇整机噪声试验和风扇部件噪声试验模型分析的需求,运用在光学和数字图像处理领域广泛应用的广义二维傅里变换理论论证了该理论在风扇噪声管道压力模态识别应用的可行性,为进一步开发利用短舱进气道、外涵道内安装的传声器阵列开展风扇噪声测试的试验数据处理方法提供了理论基础。
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