基于有理Bezier曲线离心泵叶轮轴面流道设计  

Design for Meridian Passage of Centrifugal Impeller Based on Rational Cubic Bezier Curves

作　　者：汪建华[1] 易先忠[1] 

机构地区：[1]长江大学,湖北荆州434023

出　　处：《煤矿机械》2010年第10期29-31,共3页Coal Mine Machinery

基　　金：湖北省教育厅2009年度高校产学研合作资助项目(CXY2009A007)

摘　　要：用三次有理Bezier曲线构造叶轮后盖板流线,在给定流道过流断面面积变化规律的条件下,根据内切圆的包络线为其外公切线的原理,导出了叶轮前盖板流线计算公式。实践表明通过调整有理Bezier曲线的控制点和权因子可灵活地改变轴面流道的几何形状,有效地提高叶轮CAD系统的交互设计能力。Constructs the rear shroud streamline of impeller with rational cubic Bezier curves.Under the condition that the change law of meridian passage area of impeller is given,according to the principle that the enveloping line of a inscribed circle is it’s exterior common tangent,the calculation formula of streamline of impeller front shroud is derived.Practice proves that the profile of the meridian passage of impellers can be modified flexibly by adjusting control points and the weight factors of rational Bezier curve,thus the interactive design capabilities of impeller CAD system is improved effectively.

关 键 词：离心泵 叶轮 有理B样条曲线 轴面流道 设计 

分 类 号：TH311[机械工程—机械制造及自动化]