轴流压气机进口小总压径向畸变对失速颤振的影响

EFFECT OF SMALL RADIAL DISTORTION OF INLET FLOW ON STALL FLUTTER IN AXIAL FLOW COMPRESSOR

对进口流场畸变失速颤振的影响进行了实验研究。实验结果表明：小的叶尖径向畸变能抑制颤振的发作。对此现象用三维变形激盘法进行了计算。计算结果与实验符合。

The effect of small radial stagnation pressure distortion of inlet flow on the stall flutter has been investigated experimentally.The results of experiments show that the small radial distortion of the inlet flow at blade tip can eliminate the stall flutter.This phenomenon is verified by computation with three dimensional actuator disk method.The computed results conform with the experimental data.