中文摘要：

采用优化设计方法优化某轴流透平级通流部分造型,利用基于非均匀有理B样条(NURBS)曲线技术的参数化造型方法提取包括叶片和端壁造型的全设计变量,选取级效率最大化和动叶根部最高温度最小化进行多目标优化设计.引入基于并行子空间的组合优化策略,缩短了优化设计周期.优化设计后的透平级效率提高了0.664%,动叶根部最高温度下降达透平级内温度变化范围的1.5%.该工作表明该优化设计方法在透平级设计上具有重大应用价值.

英文摘要：

Optimization design method was used to optimize the flow-path modeling of one turbine stage.The parametric modeling method based on non-uniform rational B-spline(NURBS) technology was used for turbine stage flow-path parametric modeling.The maximum isentropic efficiency and minimum temperature at rotor hub of the leading edge were selected for multi-objective optimization design.Combinatorial optimization strategy based on parallel sub space was introduced for the large-scale and multi-objective optimizatio...