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本文提出了一套跨音速复合式气冷涡轮叶片内冷气流量分配、温增、内外换热系数和温度场的计算方法 ,对设计的“冲击 -对流 -气膜”多种冷却方案进行了计算。与实测值比较 ,验证了本计算方法的可靠性和精确度 ,择优选取了四套叶片内冷结构 ,精心地进行了结构设计
In this paper, a set of calculation methods of air flow distribution, temperature increase, inside and outside heat transfer coefficient and temperature field in a transonic composite gas-cooled turbine blade are presented. Various cooling schemes of “impact-convection-gas film” . Compared with the measured value, the reliability and accuracy of this calculation method are verified. Four sets of blade internal cooling structure are selected optimally, and the structural design is meticulously