结合粒子群优化算法与 Gappy POD 的叶型反设计方法

To solve the problems of poor robustness and difficulty in adding constraints of the inverse design method based on Gappy POD （proper orthogonal decomposition） ， an inverse design method combining particle swarm optimization algorithm and Gappy POD was developed. For reducing the accuracy dominated by the overconstrained state，a pressure surface correction iteration method based on CFD calculation was proposed to make the inverse design out of the overconstrained state. The verification of subsonic and transonic compressor blade profiles showed that this method can achieve high-precision inverse design under the maximum thickness constraint，and the calculation time was shorter than the forward optimization design method. The modified design results combined with the control of key flow areas showed that the overall incidence angle performance of the two blade profiles were significantly improved compared with the original blade profiles. The static pressure rise of the blade profiles was basically unchanged at the design incidence angle，and the total pressure loss was reduced by 9.53% and 12.7%，respectively. At the same time，the available incidence angle range of subsonic blade profile remained unchanged，while that of transonic blade profile was expanded by 14.3%.