基于UG的超声速叶型造型设计方法

Design Method of Supersonic Blade Profile Modelling Based on UG

以某火电汽轮机末级叶片顶部截面的超声速叶型为原型,采用样条曲线和圆弧形成封闭叶型,通过UG使得叶型全参数化并保证曲线连续可导,并基于CFX做超声速叶型的气动计算,分析叶型流动损失的机理。将效率最高、损失最小作为寻优目标,基于优化模型调整可变参数,寻求最优解,完成了超声速叶型的优化。研究成果可为超声速叶型的型线设计提供参考。

With the supersonic profile of the top section of last stage blade in a coal fired steam turbine being used as a prototype,spline curve and arc were used to form a closed blade shape.The blade profile was fully parameterized using UG,and the curve was garanteed to be continuously derivable.Aerodynamic calculation of the supersonic blade profile was conducted to analysis the flow loss mechanism based on CFX.With highest efficiency and minimum loss as the optimization target,the variable parameters were adjusted to find out the best solution based on the optimization model,and the optimization of supersonic blade profile was completed.The research result can provide reference for the design of the superfonic blade profile.