摘要
用NURBS对叶轮机械叶片三维型面和基迭线进行参数化表达,实现了对叶片三维型面和基迭线弯、倾、掠、扭的变形控制。该方法为叶片的自动优化设计提供设计变量。把该方法构建的叶片全三维控制模块集成到基于商业软件iSIGHT的叶片粘性气动优化设计平台中,在该平台上选择优化算法对某级透平叶片进行了全三维气动优化设计实验,优化的目标是使级效率尽可能的高,同时流量不能降低并且动叶叶根前端的温度尽可能低。实验结果表明:优化后的叶型性能有所改善,同时也满足了流量和温度约束条件的要求。
The 3-dimensional profiled surface and the stacking line of turbomachinery blades are parameterized by NURBS, herewith getting the bend, the lean, the sweep and the twist deformation of the 3-dimensional profiled surface and the stacking line under control. This method provides the necessary design variables for the automatic optimizing design of blades. The 3-dimensional control module, herewith constructed, is then integrated into the optimizing viscous flow design platform with the help of iSIGHT based software; whence an optimizing algorithm is chosen for the 3- dimensional optimized trial design of blades of a certain stage, with the aim of making the stage efficiency as high as possible, without diminishing the volume of flow and simultaneously keeping the temperature of the moving blade＇ s root as low as possible. Test results show that, after optimization, the properties of the blade profile has improved, while simultaneously meeting the restricting requirements of flow volume and temperature. Figs 23 and refs 5.
出处
《动力工程》
EI
CSCD
北大核心
2006年第2期201-206,共6页
Power Engineering
基金
高等学校博士学科点专项科研基金(No.20050003063)
关键词
动力机械工程
透平机械
NURBS
三维重构
优化设计
power and mechanical engineering
turbomachinery
NURBS
3-dimensional redesign
optimized design
