引入温-粘及压-粘关系式的油膜工作性能数值分析  

Numerical analysis of temperature-viscosity and pressure-viscosity characteristics influence on the working performance of oil film

作　　者：刘赵淼[1] 金秋颖[1] 张成印[1] 申峰[1] 叶红玲[1] 

机构地区：[1]北京工业大学机械工程与应用电子技术学院,北京100124

出　　处：《计算力学学报》2011年第B04期69-73,共5页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金"高速重载工况下微尺度缝隙间粘塑性流体流动及动力学特性研究(11072011);科技部科技重大专项"高档数控机床于基础制造装备"之子课题"数控重型桥式龙门五轴联动车铣复合机床"(2009zx04002-031);北京高档数控装备研发服务平台的建设--重型机床开放实验室Ⅰ期建设及关键技术预研(Z08010402880000);北京市教委项目(KM200910005005);北京市人才强教深化计划--骨干教师项目支持

摘　　要：为了研究温-粘及压-粘效应对液体静压支承系统中油膜工作性能的影响,本文以大尺寸液体静压支承转台为研究对象,建立了三维立体油腔模型,采用有限体积法,模拟计算了引入温-粘及压-粘关系式时,油腔内部流体的承载力及温升变化情况。计算结果表明,温-粘特性及压-粘特性在很大程度上影响油腔内的承载能力和温升。引入了温-粘及压-粘关系式的计算模型更符合实际工况,计算结果对于液体静压支承系统中润滑油的选择等有指导意义。A 3-D model of large size of hydrostatic support was established in this paper in order to investigate the influence of temperature-viscosity and pressure-viscosity characteristics on the work performance of oil film in the hydrostatic support system. The effect of oil＇s capacity, temperature and viscosity were studied in the simulation by making use of the Finite Volume Method. It is indicated from the results that the temperature-viscosity and pressure-viscosity characteristics obviously affect the carrying capacity of the oil chamber and the temperature rise. Results of the computational model considering the temperature-viscosity and pressure-viscosity characteristics in this paper have good agreement with that in actual operating conditions and also have guiding significance to select lubricant in the hydrostatic support system.

关 键 词：粘度 温-粘特性 压-粘特性 承载力 

分 类 号：O351.3[理学—流体力学]