为提升高负荷扩压叶栅的气动性能,应用吸力面吹气对其角区分离流动进行抑制。利用数值模拟的方法,详细探讨了4种吹气动量系数对高负荷扩压叶栅流场以及损失的影响。计算结果表明,原型高负荷叶栅内部流动复杂。应吸力面吹气可有效减小叶栅气动损失,提升叶栅负荷,降低端区流动堵塞。高吹气动量系数方案对流场改善效果更为明显,角区分离尺度大幅度缩小,但计及吹气功耗时,损失反而较高。 In order to improve the aerodynamic performance of the high-load diffuser cascade, suction side blowing is used to suppress the separation flow in the corner area. Using numerical simulation method, the influence of four kinds of blowing momentum coefficient on flow field and loss of high load compressor cascade is discussed in detail. The calculation results show that the internal flow of prototype high load cascade is complex. Should be suction surface blowing can effectively reduce the aerodynamic loss of the cascade to enhance the blade load and reduce the end of the flow blockage. The momentum coefficient of high blowing air is more obvious for the improvement of the flow field, and the scale of separation in the corner zone is greatly reduced. However, when considering the blowing power consumption, the loss is rather high.