离心压缩机元件的气动设计通常是根据一个给定工况点设计其几何形状.如此设计的元件在该设计工况点一般能保持较好的气动性态,但当实际运行工况改变时,性能往往会恶化.本文将机翼的多点设计思想引入离心压缩机叶栅的优化设计,并应用遗传算法对这类多目标优化问题进行求解,希望由此获得在运行工况间能较好折中的叶栅型线设计,以离心压缩机扩压器叶栅为例,在两个给定设计工况下采用所提出的方法求解其最佳叶片型线.数值结果显示,方法是有效和可行的.
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