前缘逆主流喷射冷气对壁面静压有明显影响；冷气与主流掺混及卵型涡的形成导致近叶片表面处能量损失增加；吸力面或压力面根部出现与通道涡旋向相同或相反的涡系；卵型涡能够以一定形式保持到叶栅出口并与尾迹作用，使出口处气动参数剧烈变化． The front air jet counter-current cooling air has a significant impact on the wall static pressure; cold air and the mainstream of the mixing and the formation of the ovoid vortex causes the energy loss near the blade surface increases; suction surface or pressure surface root and channel vortex to the same or opposite Vortex system; the oviposit vortex can maintain a certain form to the exit of the cascade and interact with the wake, so that the aerodynamic parameters at the exit change drastically.