基于Fluent两相流空穴模型的三油槽轴承油膜特性分析  

Research on Oil Film Characteristics of Three Oil Groove Journal Bearing Based on Two Phase Flow Model of Fluent

作　　者：王丽丽[1] 尹国校 苏春建[1] 郭少辉 

机构地区：[1]山东科技大学机械电子工程学院,山东青岛266590

出　　处：《润滑与密封》2017年第9期65-69,共5页Lubrication Engineering

基　　金：中国博士后科学基金项目(2017M612304);山东科技大学杰出青年科技人才支持计划项目(2015JQJH104);国家自然科学基金项目(51305242)

摘　　要：计入空穴效应,运用Fluent两相流模型分析三油槽滑动轴承湍流状态下的油膜特性,研究不同进油压力和润滑油黏度对油膜承载力和气穴的影响。研究表明:提高进油压力可以提高轴承的承载力、减少空穴区域的面积和高比例的气穴,从而防止完全空化的发生;润滑油黏度的增大虽然增加了轴承的承载力,但也加剧了油膜发散区域的空穴现象,并且增加了高比例的气穴比例,在实际应用中应合理地选择润滑油的黏度。In consideration the cavitation effect, oil film characteristics of three oil groove journal bearing were analyzed in turbulent flow condition using two phase flow model of Fluent, and the oil film capacity and distribution of cavitation were studied at different inlet pressures and viscosities.Results show that the bearing capacity of the three oil groove journal bearing tion are journal is increased with the increasing of inlet pressures, and the area of the cavitation zone and high proportion of cavitareduced ,which can prevent the occurrence of cavitation completely.The bearing bearing capacity of the three oil groove is increased with the increasing of lubricating oil viscosity, but the cavitation phenomenon is intensified in the divergence area of oil film, and the proportion of cavitation is increased.In practical application, the lubricating oil viscosity should be rationally chosen.

关 键 词：三油槽滑动轴承 气穴 湍流 油膜特性 

分 类 号：TH133.31[机械工程—机械制造及自动化]