透平跨音速叶栅正反混合问题优化设计的研究  

A Study on Optimun Design of Mixed Direct Inverse Problems of Transonic Turbine Cascades

作　　者：李军[1] 丰镇平[1] 沈祖达[1] 

机构地区：[1]西安西安交通大学

出　　处：《动力工程》1998年第1期19-23,18,共6页Power Engineering

基　　金：西安交大自然科学基金

摘　　要：将遗传算法应用于透平跨音速叶栅正、反混合问题优化设计，提出了给定型线背弧部分压力分布，以正问题分析程序得到的压力与给定的目标压力均方差最小为目标函数，运用遗传算法在已有叶型基础上寻找新叶型的正、反混合问题优化设计模型。优化设计结果表明，文中所提出的模型和算法能够有效地优化叶型，从而可在新的领域内对叶轮机械部件的优化设计进行探索和研究。Abstract This paper presents an aerodynamic optimun design method for transonic turbine cascades,with the help of genetic algorithm.For a given pressure distribution along the suction side,with the minimizing mean square deviation between the aimed and the computed pressure as the objective fonction,the latter being obtained by the direct problem analyzing programme,starting from an existing profile,genetic algorithm is applied for finding the optimum design model for mixed direct inverse problems of new profiles.Results obtained by optimum design show that the model and the algorithm as presented in this paper is capable of effectively optimizing profiles and thus open a new field for exploring and researching ways of optimizing the design of turbo machinery components.

关 键 词：遗传算法 正、反混合问题 跨音速 透平叶栅 优化设计 

分 类 号：TK14[动力工程及工程热物理—热能工程]