某离心叶轮叶片改型设计研究

Research on the Blade Modification Design of a Centrifugal Impeller

该文以某高压比离心叶轮为研究对象,以改善叶轮流动特性和提升叶轮的气动性能为目标对其叶片进行改型设计。文章基于ANSYS BladeGen,采用四阶Bezier曲线对叶轮叶顶弧线以及叶根弧线进行参数改变,通过流场数值模拟分析得到最终设计叶型。数值模拟结果表明,新设计叶型离心叶轮相较于原叶轮压比提高了0.87%,效率提升了5.69%,达到了本次改型设计的目标。

This article is aimed to improve the flow characteristics and aerodynamic performance of a centrifugal impeller.Based on ANSYS BladeGen,by using four order Bezier curve the parameters of tip arc and the hub arc were changed,then the final blade was obtained through the numerical calculation of the flow field.The results show that,the newly designed centrifugal impeller has a 0.87%increase on the pressure ratio and a 5.69%increase on the efficiency,which also has achieved the goal of this article.