中文摘要：

为了提高跨音速气冷涡轮的效率，减小涡轮内的二次流损失，基于弯叶片设计方法，编制了弯叶片生成程序，同时借助优化设计方法，对某高压涡轮进行了气动优化设计。优化过程中，在导叶中应用弯叶片技术，同时优化动叶进出口气流角，以适应动静叶间匹配的变化。优化结果显示，在流量及功率变化不大的前提下，级效率较原型提高0．3％。效率提高的主要原因是优化后导叶中横向二次流损失减小。

英文摘要：

To improve the efficiency of air-cooled transonic turbine stage, and reducing the secondary flow loss in theturbine, a curved blade shape generating program was made based on the optimizing methods of blade curving. Anoptimization platform was also established to optimize a high pressure air-cooled transonic turbine stage. To improvematching condition of the blade and vane, by the using of the curved blade in the stationary blade, the inlet and outlet flowangle of the rotating blade was also optimized in the same time. The results show that the stage efficiency is increased by0.3% with only little change in the mass flow rate and power. The decrease of the transverse secondary flow loss in turbinevane is the main factor to increase the efficiency.