摘要
简要介绍低比速离心泵特点,阐述计算的控制方程和叶轮通道网格划分方法。运用商业CFD软件FLU-ENT对不同叶片形式叶轮流道进行三维湍流流动计算。计算采用压强连接的隐式修正SIMPLEC算法和雷诺平均法的RNGk-ε湍流模型。根据计算结果分析叶片形式对流速分布、压力分布的影响,揭示叶轮内流动规律,提高低比速离心泵优化设计的水平。
The characteristics of low specific speed centrifugal pump are introduced, and the grid generation method for impeller passageway and the governing equations of calculation are also expatiated. Using commercial CFD software FLUENT for different blade forms in the impeller passageway, 3D turbulent flow is calculated. Based on Reynolds average, the RNG k-ε model, and SIMPLEC arc used for the calculation. The optimal design level of low specific speed centrifugal pump is improved through analyses of the influences of blade forms of impeller on the velocity distribution, the pressure distribution and the inner flowage rules of the pump.
出处
《中国农村水利水电》
北大核心
2006年第4期67-70,共4页
China Rural Water and Hydropower
关键词
低比速离心泵
叶轮
CFD
三维湍流
low specific speed centrifugal pump
impeller
CFD
3d turbulent flow
