水力发电学报2013，Vol.32Issue(3)：229-233,246,6.
混流泵叶轮设计关键参数分析
Analysis of key parameters for mixed-flow pump impeller design
摘要
Abstract
Based on an iterative design method,a series of mixed-flow pump impellers were designed by setting different values of some key parameters,such as velocity moment distribution and positions of the leading and trailing edges.The three-dimensional flow field of a mixed-flow pump impeller was simulated by solving the Navier-Stokes equations and a RNG k-ε turbulent model with the SIMPLEC algorithm,and the distributions of velocity and pressure fields inside the impeller were obtained.The simulated data were used to analyze the effects of key parameters and evaluate the impeller designs.The results show that the blades designed on the velocity moment distribution of parabolic-like type,are the strongest in controlling flow directions and the best in hydraulic performance.An appropriate increase in the meridional distance between the blade's leading and trailing edges can improve the internal flow and enhance the hydraulic efficiency,but a too great distance leads to efficiency loss due to skin friction.关键词
水力机械/混流泵/数值模拟/进口边/出口边/速度矩分布Key words
hydraulic machinery / mixed-flow pump / numerical simulation / leading edge / trailing edge /velocity moment distribution分类
机械制造引用本文复制引用
邴浩,曹树良,陆力..混流泵叶轮设计关键参数分析[J].水力发电学报,2013,32(3):229-233,246,6.基金项目
国家自然科学基金(51176088)资助项目和永沙科学与水利水电工程国家重点实验室统筹研究课题资助项目(2009T3) （51176088）
