为了提高涡轮叶片设计效率，搭建了基于一维管网理论的iSIGHT优化设计平台，获得了叶片的优化结构，并对其进行三维仿真计算分析。研究表明：优化前后叶片的气动性能变化不大，总压损失仅在端壁处略有差别；优化后涡轮叶片的壁面温度分布更加均匀，壁面的最高温度降低，温度梯度减小，最大相对温差降低10%左右；在降低叶片热应力的同时相对冷却效率提高1.0%。

In order to improve the efficiency of turbine blade design, an iSIGHT optimization design platform based on onedimensional pipe network theory was established, the optimized structure was obtained, and threedimensional simulation calculation analysis was conducted. The research shows that the aerodynamic performance of the blades before and after optimization has little change, and the total pressure loss is only slightly different at the end wall; after optimization, the wall temperature distribution of the turbine blades is more uniform, the maximum wall temperature is reduced, the temperature gradient is reduced, the maximum relative temperature difference is reduced by about 10%; and the thermal stress of the blades is reduced while the relative cooling efficiency is increased by 1%.

TK474.7

国家自然科学基金“叶企孙”科学基金（U2241251）;中船集团自立科技项目(202109Z)