本文采用小波分析数据处理方法，分别对高速和低速单级轴流压气机旋转失速先兆的发生和发展过程进行了分析，结果发现两台压气机的旋转失速先兆都是由脉冲开始，随之出现频率逐渐阶跃的低频波，当阶跃频率到达失速频率时压气机进入失速。在高速实验台上发现这一现象的出现沿叶片通道方向由后向前延迟。
This paper presents the results of stall inceptionmeasurement and its wavelet analysis in a low-speed and a high-speedsingle-stage axial compressor at different operating speeds.The onset of rotating stall was detected by an impulse of pressuresignal and a follow-up low-frequency wave whose center frequency risesin a step-up manner. The compressor finally falls into rotatingstall when this frequency reaches the level of stall frequency.This phenomenon in the high-speed compressor occurs later at the inlet than at the outlet along the blade chord.
参考文献
| [1] | Liao S;Chen J.Time-Frequency Analysis of CompressorRotating Stall by Means of Wavelet Transform[M].ASME 96-GT-57,1996 |
| [2] | 聂超群;陈静宜;蒋浩康 等.低速轴流压气机旋转失速先兆特征的实验分析[J].工程热物理学报,1995,19(03):293-298. |
| [3] | Hoying D A;Tan C S;Vo H D.Role of Blade PassageFlow Structure in Axial Compressor Rotating Stall Inception[M].ASME 98-GT-588,1998 |
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