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针对一台跨声速压气机转子在不同转速下的失速过程进行了稳态和动态实验研究.通过对原始信号、小波分析结果以及FFT(fast Fourier transform)变换结果的分析得到,该压气机转子在3个不同转速时均为突跃型全叶高失速,流场中存在一个失速团,失速团沿周向的传播方向与转子转动方向相同,其相对静止坐标系的量纲一转速随转子转速的增大而减小,对这一规律产生的原因进行了分析.
The steady-state and dynamic experiments of stall process of a transonic compressor rotor at different rotational speeds were carried out. By analyzing the results of the original signal, wavelet analysis and fast Fourier transform (FFT), the rotor of the compressor at Three different speeds are all sudden jump type full-height stall, there is a stall group in the flow field, and the direction of propagation of the stall group in the circumferential direction is the same as the rotor rotation direction. The relative rotation speed of the coordinate system with the rotor speed Of the increase and decrease, the causes of this law were analyzed.