关键词: 涡轮叶片;弯曲叶片;二次流;纳维尔斯托克斯方程

Abstract: In order to control second flow in cascade, three-dimensional design technique of the blade bowed circumferencially and the blade bowed in its chord-normal direction was successfully applied to the modern turbomachinery design Depending on numerical simulation and experiment,different physical principium between the blade bowed circumferencially and the blade bowed in its chord-normal direction was analyzed.The design rule for two types of bowed blades in turbine stage was summavized It points out that two types of bowed blades can control second flow, but their physical principiums are different

Key words: Turbine blade;Bowed blade;Secondary flow;Navier-Stokes equation