叶栅稠度变化对带附面层抽吸的动叶流场的影响

The Effect of Cascade Solidity Changing on the Rotor's Flow Field with Boundary Layer Suction

对带有附面层抽吸的跨音速压气机动叶改变叶栅稠度后的流动特性进行了数值计算。详细分析了叶栅稠度和激波强度、叶片表面静压分布等参数之间的关系。结果表明,稠度过小,会使叶片负荷太高;稠度过大,反而会使损失增加。叶栅稠度对压气机动叶气动性能有重要意义。

In order to research the effect of cascade solidity on the flow field characteristics, numerical study is carried out on the different cascade solidity transonic compressor rotors with boundary layer suction. The relationship between the cascade solidity, shock-wave strength and surface static pressure etc is analyzed in detail. The result shows that, smaller solidity could lead to high loading; however, bigger solidity could lead to the increase of loss. So the cascade solidity has great meaning to the aerodynamic characteristics of compressor.