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为了深入认识失速团在不同时刻的特征,采用一种基于二维壁面静压谱的分析方法对几种典型状态下的单级轴流压气机转子叶尖流场静压分布特征进行了详细研究。结果表明:该方法能很好地观察不同时刻的失速团发展变化过程以及失速团的影响范围,同时还能判别失速团的个数以及大致的旋转速度。用此方法发现该压气机在进入失速后有1个大失速团,影响范围在4/5周向通道左右,而开大节气门后在退出失速的过程中失速团会分裂成为2个,且失速团的影响范围会变得很小,旋转速度增大。
In order to gain a better understanding of the characteristics of the stall group at different times, a two-dimensional wall static pressure spectrum based analytical method was used to study the hydrostatic pressure distribution characteristics of the single-stage axial compressor rotor tip in several typical states . The results show that this method can well observe the process of development and change of stalling group and the influence range of stalling group at different time, and can also identify the number of stalling groups and the approximate rotation speed. Using this method, it is found that the compressor has a large stall group after entering the stall, and the influence range is about 4/5 circumferential channels. However, when the large throttle is released, the stall group will split into two stall stalls The effect range of a stalled mass becomes small and the rotation rate increases.