螺旋离心泵内回流涡空化的计算与分析  

Numerical Calculation and Analysis of Backflow Vortex Cavitation in a Screw Centrifugal Pump

作　　者：杨斌[1] 邓玉轩 何娜 Yang Bin;Deng Yuxuan;He Na(Lanzhou City University,Lanzhou 730070,China)

机构地区：[1]兰州城市学院

出　　处：《流体机械》2019年第9期17-20,共4页Fluid Machinery

基　　金：兰州市人才创新创业项目（2016-RC-109）;甘肃省高等学校科研项目（2015A-121）

摘　　要：为了对水力机械内部的回流涡空化流动进行深入研究,应用CFD软件对一台螺旋离心泵进行了数值模拟计算,发现在一定工况下,螺旋离心泵叶轮进口处发生了回流涡空化,回流涡空化所形成的回流涡空化云会随叶轮的转动而转动,且回流涡空化云在转动时,回流涡空化云的体积会发生变化。In order to study the backflow vortex cavitation in hydraulic machinery in depth,a numerical simulation and analysis of backflow vortex cavitation in a screw centrifugal pump was carried out using the computer fluid dynamics software CFD.It was found that under certain operating conditions,backflow vortex cavitation occurred at impeller inlet of the screw centrifugal pump,the backflow vortex cavitation cloud rotated with the impeller rotation,and the volume of the backflow vortex cavitation cloud changed with the rotation of the backflow vortex cavitation cloud.

关 键 词：螺旋离心泵 回流涡空化 计算流体力学 数值模拟 

分 类 号：TH3[机械工程—机械制造及自动化]