基于Bezier曲线叶轮轴面流道造型研究  

Research on Modeling of Impeller Meridian Passage Based on Bezier Curves

作　　者：汪建华[1] 

机构地区：[1]长江大学机械工程学院,湖北荆州434023

出　　处：《机械工程师》2009年第4期72-74,共3页Mechanical Engineer

基　　金：湖北省教育厅2005年度重大科技项目(Z200512001)

摘　　要：针对现有的轴面流道设计方法的缺陷,用六点五次Bezier曲线构造叶轮前后盖板流线,根据Bezier曲线的性质,合理给定盖板流线控制点来控制盖板流线的形状,导出了内切圆切点、半径、圆心坐标和过流断面面积的计算公式。实例验证表明,文中方法便于实现对叶轮轴面流道形状进行调控和修改,并具有较高的计算精度和一定的实用价值。To improve the existing design methodology of meridian flow passage, this paper presented a method of creating the impeller shroud steamline by use of Bezier curves of degree 5. Based on the properties of Bezier curves,the shape of the shroud steamline could be controlled well by determining the control point. The formulae for calculating the inscribed circle＇s tangent point, centre coordinates and radius and the flow passage area are derived.Examples show that the profile of the meridian passage of impellers is easy to be controlled and modified by using this method, which is accurate and of great practical value.

关 键 词：离心泵 叶轮 BEZIER曲线 轴面流道 造型 

分 类 号：TH311[机械工程—机械制造及自动化]