大颗粒下螺旋离心泵内运动特性数值模拟与分析  

Numerical Simulation and Analysis of Particle Motion Trajectory in the Screw Centrifugal Pump with Large Particles

作　　者：李仁年[1,2] 陈昊[1] 韩伟[1,2] 张建勋[1] 李雪峰[1] 

机构地区：[1]兰州理工大学,甘肃兰州730050 [2]甘肃省流体机械及重点实验室,甘肃兰州730050

出　　处：《流体机械》2016年第7期18-21,共4页Fluid Machinery

基　　金：国家自然科学基金资助项目(51079066)

摘　　要：以150×100LN-32型螺旋离心泵为模型,采用欧拉多流体、RNG k-ε模型对其内部进行三维数值模拟。对比不同颗粒粒径以及浓度情况下固液两相流场,分析了在大颗粒情况下,固体颗粒在螺旋离心泵内的运动情况。通过固相体积分数、压力以及速度分布,得出了大颗粒固液两相流在螺旋离心泵内的运动特性。并以此为参照,分析大颗粒情况下螺旋离心泵磨损情况。With 150 ×100 LN-32 type screw centrifugal pump for the model,using the Multi-Fluid VOF mode and RNG k -εturbulence mode for the three-dimensional numeric simulation of solid-liquid two-phase flow in screw centrifugal pump.Comparing different particle size and concentration of solid-liquid two-phase flow field,analyzing the movement of solid particles in the screw centrifugal pump with a major diameter.Based on the volume-fraction of solid phase,pressure and velocity,the motion characteris-tics of large particles and liquid two phase flow in the screw centrifugal pump were obtained.Taking this as reference,the erosion of the screw centrifugal pump is analyzed.

关 键 词：螺旋离心泵 固液两相流 磨损 数值模拟 

分 类 号：TH311[机械工程—机械制造及自动化]