轴流式水轮机叶片进口边优化

The Optimization of the Blade Inlet Profile of Propeller Turbine Based on 2D Cascade

基于平面叶栅设计方法进行叶栅的初步设计与参数化表达的基础上,对水轮机叶片的进口边进行优化设计。该方法结合N-S方程流场数值模拟,采用NSGA-Ⅱ多目标的优化算法,通过控制叶片轴向和周向两个变量的变化进行优化。结果表明,优化效果良好。

Using the method which designs and represents the initial of 2D cascade to optimize the blade inlet profile of the turbine.Navier-Stokes equation and the NSGA-Ⅱmethods were used to carry out the numerical simulation of viscous flow in cascade,and to optimize the blade inlet profile through out controlling the axial and circumferential varies of the blade inlet profile.The results show that the method has a good performance on optimization.