摘要
间隙密封是一种非接触密封结构形式,可以实现自润滑,减小摩擦力,提高液压缸的动态特性。为了研究在变黏度条件下,均压槽形状对液压缸间隙流场的影响,根据温度、压力与液压油黏度之间的关系,利用Fluent软件的UDF技术编译仿真模型的变黏度属性及边界条件,动态仿真了活塞周期运动过程中不同均压槽间隙流场的温度、黏度、泄漏量以及内壁面摩擦力的变化规律。
Gap seal is a non-contacting seal structure, not only can realize self-lubrication, but also help to reduce friction force, and greatly improve the dynamic characteristic of the hydraulic cylinder. In order to study the influence of pressure-equalizing groove shapes on the seal flow field of the hydraulic cylinder when the viscosity is varying, we compile variable viscosity properties and boundary conditions of the simulation model used by Fluent software--UDF according to the relationship between the temperature, pressure and viscosity of the hydraulic oil, to simulate dynamically the temperature, viscosity, leakage and wall friction of flow field of seals with different pressure-equalizing grooves in the periodic motion of piston.
出处
《液压与气动》
北大核心
2014年第7期73-75,87,共4页
Chinese Hydraulics & Pneumatics
关键词
间隙密封
变黏度
均压槽
泄漏量
UDF
gap seal, variable viscosity, pressure-equalizing grooves, leakage, UDF
