基于环量分布的离心叶轮S2流面设计与优化  

Design and Optimization for Centrifugal Impeller S2 Streamsheet Based on Circulation Profile

作　　者：谷传文[1] 陈榴[2] 吴萍[1] 戴韧[2] 

机构地区：[1]合肥通用机械研究院,安徽合肥230031 [2]上海理工大学,上海200093

出　　处：《流体机械》2013年第3期24-28,77,共6页Fluid Machinery

基　　金：安徽省科技攻关项目(11010202156)

摘　　要：采用准三维气动设计方法,用Bezier曲线表示环量沿轮毂和轮盘的流向分布,子午面环量分布由拉普拉斯方程确定,设计了3种不同负荷分布的离心式叶轮。采用CFD模拟,对比叶轮内流动和气动性能的优劣,结果表明:均匀加载型式的叶轮性能优于前加载或后加载的叶轮,最优设计的叶轮负荷分布是"两端小,中间大"。通过Laplace方程和Bezier多项式控制环量可以达到灵活控制叶片载荷的目的。The three typical impeller designs with quasi-three-dimensional flow method was presented. Streamwise circulations were specified along meridional hub and shroud boundaries. Laplace equation was solved to distribute the circulation on the meridional surface. Impellers were designed for afore-loaded, uniform-loaded and aft-loaded ones. Their flow performances were compared though CFD simulations. Results show that uniform-loaded impeller has better performance than the other two ones. Blade circulation profile can be controlled easily by Bezier lines and Laplace equation.

关 键 词：环量分布 离心叶轮 S2流面 优化 

分 类 号：TH43[机械工程—机械制造及自动化] TU834.3[建筑科学—供热、供燃气、通风及空调工程]