摘要
针对固体颗粒物致液压阻尼孔阻塞的问题,运用软件Fluent中的欧拉-欧拉多相流模型对细长孔型的液压阻尼孔流域进行三维固液两相流数值计算与分析.研究结果表明:在阻尼孔入口附近,固体颗粒物处于堆状淤积状态,固相体积分数沿中心轴线流动方向存在“阶跃”现象,且固相体积分数随油液黏度的增大而减小,并随颗粒物密度的增大而增大.阻尼孔进口中心区域颗粒的淤积是形成阻尼孔阻塞的主要原因.
In order to solve the problem of hydraulic damping hole blockage caused by solid particles,this study uses the Euler-Euler multiphase flow model of software Fluent to calculate and analyze the three-dimensional solid-liquid two-phase flow in the flow region of a slender-type hydraulic damping hole.Simulated results show that near the entrance of the damping hole,the solid particles are in a heap-like silting state,the solid-phase volume fraction appears“step”phenomenon along the flow direction of the central axis.It is also found that the solid-phase volume fraction decreases with the increase of the viscosity of the oil,and increases with the density of the particles.The siltation of particles in the central area of the damper inlet hole is the main cause of the blocking to the damping hole.
作者
刘新强
冀宏
孙飞
李娜娜
张建军
LIU Xin-qiang;JI Hong;SUN Fei;Li Na-na;ZHANG Jian-jun(College of Energy and Power Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China)
出处
《兰州理工大学学报》
CAS
北大核心
2020年第3期45-49,共5页
Journal of Lanzhou University of Technology
基金
国家自然科学基金(51575254)。
关键词
液压阻尼孔
阻塞
固体颗粒物
淤积
数值模拟
hydraulic damping hole
blockage
solid particles
deposition
numerical simulation
作者简介
刘新强(1987-),男,陕西陈仓人,硕士,讲师.
