有无分流叶片低比速离心泵性能对比分析  

Comparative Analysis of Low Specific Speed Centrifugal Pumps with or Without Splitting Vanes

作　　者：王洋[1] 蒋其松[1] 傅剑辉[1] 

机构地区：[1]江苏大学流体机械工程技术中心,江苏镇江212013

出　　处：《农机化研究》2010年第8期189-192,196,共5页Journal of Agricultural Mechanization Research

基　　金：国家"863"计划项目(2006AA100211)

摘　　要：采用FLUENT对不带分流叶片和添加分流叶片的低比速离心泵的三维流道模型进行数值模拟,计算采用雷诺时均方程和标准k-ε湍流模型,应用SIMPLE算法,对速度、压力云图以及性能曲线进行对比分析。结果表明,分流叶片可以冲刷尾流,有效抑制液体的脱流,更好地控制液体的流动,减少叶轮内的水力损失,提高离心泵性能。3-D models of 1ow specific speed centrifugal pumps with or without splitting vanes was simulated using FLUENT software.By adopting time-averaged N-S equations and the standard k-ε turbulent model,the calculation was carried on the basis of SIMPLE algorithm.By contrasting the chart of velocity and pressure,the performance curves of H-Q and η-Q,splitting vanes could erode wake flow and control the flow separation,the moving of the fluid is controlled better,reducing the hydraulic loss in the centrifugal impeller,which make contributions to enhancing the performance of pump.

关 键 词：开式叶轮 离心泵 数值模拟 湍流模型 空化性能 

分 类 号：TH311[机械工程—机械制造及自动化]