轴承腔内油雾温度场数值模拟及润滑效果  

Numerical Simulation and Lubrication Effect of Oil Mist Temperature Field in Bearing Cavities

作　　者：宋锦春[1] 陈建文[1] 张志伟[1] 王长周[1] 

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2010年第7期1019-1022,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50875040)

摘　　要：计算流体动力学(CFD)的相关分析方法与油雾润滑技术相结合已成为研究油雾润滑机理的一种有效途径.为了对连退平整支承辊轴承腔内的油雾温度场及润滑效果进行研究,以CFD理论为基础,对油雾流场进行了数值模拟;通过对数值计算结果的分析,得到了不同滚子生热率条件下润滑油雾在轴承腔内的传热规律;建立了两种供油量情况下的滚子生热率与轴承温升之间的拟合方程,得到了滚子生热率对润滑效果的影响规律及增加油雾的散热能力、降低连退平整支承辊的温度的方法.Combining the oil mist lubrication with CFD has become an effective way to investigate the mechanism of oil mist lubrication. A CFD-based numerical simulation of oil mist flow field was therefore done to investigate the oil mist temperature field and lubrication effect in the bearing cavities of supporting rollers for continuous annealing/leveling system. The results revealed the heat transfer process of oil mist in bearing cavities under condition that the calorigenic rates of rollers are different. The fitted equations of roller＇ s calorigenic rates and bearing temperature rising were thus given with two different supplies of lubricant, thus showing the influence of roller＇ s calorigenic rate on lubrication effect and the ways to enhance the heat dissipation potential and decrease the temperature of the supporting rollers.

关 键 词：CFD 凝缩嘴 油雾润滑 流场 润滑效果 

分 类 号：TH117.2[机械工程—机械设计及理论]