对叶栅奇点法逆命题求解方法的改进  

An Improvement to an Inverse Design Method of Cascades

作　　者：罗芳霞 樊会元[2] 

机构地区：[1]西安市天然气公司 [2]西安交通大学

出　　处：《风机技术》1999年第4期5-9,共5页Chinese Journal of Turbomachinery

摘　　要：在文献〔１〕所提奇点法的基础上，提出了一种基于遗传算法的变叶片高度环列叶栅逆命题设计方法。新方法回避了文献〔１〕中可能存在的叶片法向速度振荡现象对叶片修正过程的影响。数值验证显示本方法更可行和更便于工程应用。A genetic-algorithm-based inverse method is developed to design circular cascades with varying blade height,Referring the singularity method in Ref.〔1〕.The new method can effectively avoid unfavorable effect the modifying process of possible fluctuation of the calculated residual velocity values normal to profile.Numerical simulation shows that the method can effectively avoid the fluctuation phenomenon of the normal velocity distribution on the blade contour occurred in Ref.〔1〕,it is thus more convenient to use in engineering application.

关 键 词：透平机械 叶栅 奇点法 遗传算法 扩压器 

分 类 号：TK05[动力工程及工程热物理] TH122[机械工程—机械设计及理论]