摘要
该文采用基于颗粒动力学的Euler-Euler双流体模型,综合运用计算流体力学和动态网格技术模拟横向弯曲振动下的管道内部液固两相流流场。通过对几种横向弯曲振动工况下的液固两相流流场分析,发现在横向弯曲振动作用下局部颗粒体积浓度明显升高、液固两相流压强损失大幅增加,压强损失发生周期性的波动,波动周期与横向弯曲振动周期基本相同。随着横向弯曲振动振幅和频率的增加,压强损失明显增大。当颗粒高体积浓度区域"弯曲"现象出现在主振型位移峰值处时,压强损失最大。
In this paper, Euler-Euler two-fluid model based on particle dynamics, computational fluid dynamics anddynamic grid technique are used to simulate the flow field of liquid-solid two-phase flow under the transverse bending vibration.By analyzing the flow field of the liquid-solid two-phase flow under several transverse bending vibration conditions, it is foundthat the volume fraction of local particles and the pressure loss of the liquid-solid two-phase flow increase significantly due to thetransverse bending vibration. The pressure loss occurs periodically, whose period is basically the same as the transverse bendingvibration. With the increase of amplitude and frequency of transverse bending vibration, the pressure loss rises obviously. Whenthe 'bending' phenomenon of the particle accumulation zone occurs in the position of the maximum vibration displacement ofthe principal mode, the pressure loss will be the greatest.
作者
刘勇
石雯
LIU Yong;SHI Wen(China Ship Scientific Research Center,Shanghai Branch,Shanghai 200011,China)
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2019年第1期115-121,共7页
Chinese Journal of Hydrodynamics
基金
中国船舶重工集团公司科技创新与研发项目(2017J03)~~
关键词
矿物水力提升
横向弯曲振动
液固两相流
压强损失
mineral hydraulic transportation
transverse bending vibration
liquid-solid two-phase flow
pressure loss
