三维跨音速压气机叶栅多目标气动优化设计  

MULTI-OBJECTIVE OPTIMIZATION DESIGN OF THE 3D TRANSONIC COMPRESSOR CASCADE

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,陕西西安710049

出　　处：《工程热物理学报》2007年第2期223-225,共3页Journal of Engineering Thermophysics

摘　　要：提出了一种多目标差分进化算法(MDE),典型函数试验结果表明该算法具有优秀的多目标寻优能力,满足多目标气动优化设计的要求。耦合并行多目标差分进化算法、三次B样条曲面造型方法和CFD求解技术,提出了新的轴流式叶轮机械叶栅三维多目标气动优化设计方法。选择等熵效率和总压比为目标函数,完成了NASA Rotor37转子叶栅的多目标气动优化设计．优化后叶栅的气动性能明显提高,表明该方法具有良好的优化性能和应用前景．A new multi-objective optimization algorithm named as Multiobjective Differential Evolution （MDE） is proposed and the typical mathematical test demonstrates the excellent optimization performance of MDE. A new parallel multi-objective aerodynamic optimization method, combined with the parallel MDE, surface modeling method and CFD technique, is developed for multi-objective optimization design of the 3D axial turbomachinery cascades. The transonic compressor cascade, NASA Rotor 37, is optimized for the maximization of the isentropic efficiency and the total pressure ratio. The optimal designs show a much better aerodynamic performance than that of the reference design. It demonstrates that the presented optimization method has good performance and is adapted to the aerodynamic design for turbomachinery cascades.

关 键 词：多目标 差分进化算法 气动优化 压气机叶栅 

分 类 号：O354[理学—流体力学]