滑阀间隙中方形微米颗粒的旋转现象

发布时间：2017-12-28 13:15

  本文关键词：滑阀间隙中方形微米颗粒的旋转现象　出处：《兰州理工大学学报》2017年05期 　论文类型：期刊论文

  更多相关文章： 滑阀配合间隙 方形颗粒 流固耦合 旋转现象 轨迹波动

【摘要】：将滑阀微米配合间隙简化为二维模型,敏感颗粒外形近似为方形.运用COMSOL软件中流固耦合模块的任意拉格朗日-欧拉方法,对方形微米颗粒在滑阀间隙内的运动特征进行仿真研究.发现了颗粒在滑阀间隙中的旋转现象,此现象从微观层面科学地解释了非圆球形颗粒物诱发滑阀卡滞的机理.流固耦合计算显示,微米颗粒跟随油液流动的同时,颗粒在间隙中产生旋转运动,同时颗粒中心的运动轨迹有上下波动;均压槽中颗粒中心的运动轨迹呈抛物线状,径向位移的最大值约为均压槽深度的1/4,随着方形颗粒尺寸的增大,其沿径向位移的最大值呈减小趋势.
[Abstract]:The valve clearance is simplified to a two-dimensional model of micron particles, sensitive shape similar to square. The use of any COMSOL software Lagrange FSI module - Euler method, the simulation study on the movement characteristics of square micron particles in valve gap. It is found that the particles in the rotary valve clearance in sliding phenomenon, this phenomenon from the micro level of science to explain the non spherical particles induced mechanism of valve seizure. FSI calculations show that micron particles follow the oil flow at the same time, particles produced rotary motion in the gap, while the center of the particle motion trajectory has fluctuated; trajectory pressure equalizing groove of the particle center is a parabola, the maximum the value of radial displacement of the pressure groove depth is about 1/4, with the increase of the particle size of the square, along the radial displacement of the maximum value decreases.
【作者单位】： 兰州理工大学能源与动力工程学院;甘肃省液压气动工程技术研究中心;
【基金】：国家自然科学基金(51575254) 国家重点研发计划(2016YFC0304800) 甘肃省自然科学基金(1508RJYA086)
【分类号】：TH137.52
【正文快照】： (1.College of Energy and Power Engineering,Lanzhou Univ.of Tech.,Lanzhou 730050,China;2.Hydraulic and Pneumatic EngineeringTechnology Research Center of Gansu Province,Lanzhou Univ.of Tech.,Lanzhou 730050,China)滑阀卡滞是引起液压阀流体控制性能劣化、功能，

本文编号：1346125