流体机械Issue(4)：23-27,5.DOI:10.3969/j.issn.1005-0329.2014.04.005
旋流泵内液固两相流场的CFD-PBM耦合计算
CFD-PBM Coupled Calculation on Liquid-solid Two-phase Flow Field in a Vortex Pump
摘要
Abstract
In order to obtain physical reality of liquid-solid two-phase flow characteristics in a vortex pump,ased on the Euler-Euler two fluid model,loading population balance model (PBM).Considering particle dynamics behavior of coalescence and breakage,calculating liquid-solid two-phase flow field under different flow rate,particle size and volume concentration of particles, and pump performance variation with particles.Calculation results show that:From import to export,particle size near the back of the blade increases significantly;in impeller exit location,the same radius,from the blade to near the back form reverse diameter gradient;in the outer section,forming reverse diameter gradient in the direction of axial.Comparing with Euler-Euler two fluid model results,after loading PBM model,the total particle concentration distribution characteristic exist differences;in the same shaft section,the distribution of particle concentration is basically the same in the center;but in the middle and out edge location appear difference.PBM model to calculate the pump head and efficiency is more closer to the experimental value,proving that CFD-PBM coupled calculation of prediction accuracy is higher.关键词
旋流泵/欧拉双流体模型/群体平衡方程/颗粒分布Key words
vortex pump/euler two-fluid model/population balance model/particle distribution分类
机械制造引用本文复制引用
钱姜海,杨敏官,曹彦松,高波,王浩宇..旋流泵内液固两相流场的CFD-PBM耦合计算[J].流体机械,2014,(4):23-27,5.基金项目
国家自然科学基金资助项目 （）
