基于B样条曲线的叶轮轴面流道设计  

Design for Impeller Meridian Passage Based on B-spline 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：《长江大学学报（自科版）（上旬）》2008年第4期98-101,共4页JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG

摘　　要：针对现有的轴面流道设计方法的缺陷,用三次B样条曲线构造叶轮后盖板型线,在给定流道过流断面面积变化规律的条件下,导出了叶轮前盖板型线计算公式,并通过移动B样条曲线控制点对叶轮轴面流道形状进行修改。实例计算表明,该方法直观、灵活,便于设计者融入自己的设计经验,可有效地提高叶轮CAD系统的交互设计能力。In view of the existed design flaws of meridian flow passage of impeller in centrifugal pumps,it constructed the back shroud streamline of impeller with cube B-spline curves.Under the condition that the change law of meridian passage area of impeller was given,the formula to compute the streamline of front shroud of impeller was derived.By moving control point of B-spline curve,meridian passage of impeller was amended.Example shows that this method is intuitive,flexible and it is easy for designers to add their experience to design,thus the interactive design capabilities of impeller CAD system are improved effectively.

关 键 词：离心泵 叶轮 B样条曲线 轴面流道 造型 

分 类 号：TE933[石油与天然气工程—石油机械设备]