基于多目标优化的透平叶栅变工况设计方法  

An off-design method of turbine blade based on multiobjective optimization

作　　者：宋立明[1] 李军[1] 丰镇平[1] 罗常[1] 

机构地区：[1]西安交通大学叶轮机械研究所,西安710049

出　　处：《航空动力学报》2007年第9期1499-1504,共6页Journal of Aerospace Power

摘　　要：将基于多目标优化方法的变工况设计思想引入到透平叶栅气动优化设计领域,以能量法为基础,提出了二维叶栅型线光顺方法和叶栅自动设计参数化方法,在此基础上进一步结合并行多目标差分进化算法和CFD技术,发展了叶栅变工况自动气动优化设计方法.对一个透平叶栅选择一亚声速工况和一跨声速工况进行了变工况自动气动优化设计研究.设计结果表明该设计方法能一次性获得适用于不同工况范围的多个气动性能优良的叶栅,具有优秀的设计能力和工程实用价值.The off-design concept based on multiobjective optimization was introduced into turbomachinery cascades optimization. And, the en to develop a 2D blade fairing method and a new aut method. By combining parallel multiobjective differenti nique,an off-design aerodynamic optimization method aerodynamic optimization of a turbine blade was stud transonic condition. The result indicates that this de blades profiles of good aerodynam presenting strong design capability ergy optimization method was applied omatic blade design parameterization al evolution algorithm and CFD tech- was developed. Thus, the off-design ied under the subsonic condition and sign method can help to get several ic performance suitable and higher engineering for different working condition, practicability.

关 键 词：航空、航天推进系统 透平叶栅 能量法 多目标 气动优化 变工况 

分 类 号：O354[理学—流体力学]