应用遗传算法求解二维扩压器壁面速度最优分布

将遗传算法应用于求解透平机械中的二维扩压器壁面最优化速度分布，该方法可以容易的求解出既满足在扩压器出口流动速度极小又保证壁面边界层不发生分离的最优速度分布。用该方法求取著名的Ｓｔｒａｔｆｏｒｄ实验条件下的二维扩压器最优速度分布，所得结果与该实验吻合良好。

Computation for Optimal Velocity Distribution of 2 D Diffusers Using Genetic Algorithm

In this paper a genetic algorithm is used to compute the optimal velocity distribution of a turbomachinery 2 D diffuser. Using this new approach, the expected optimal surface velocity distribution of 2 D diffuser can be very accurately searched, which on one hand, can make the velocity value minimized at the diffuser's outlet, and, in the same, guarantee the continuation of flow in the boundary layer. The approach is demonstrated with a 2 D diffuser which has the same flow conditions with that in the famous Stratford's experiment. The obtained result shows a good consistency with Stratford's experiment.