椭圆形轴瓦滑动轴承动特性数值分析  

Numerical Analysis of Dynamic Characteristics on Elliptical Bearings

作　　者：王欣彦[1] 王立鹏[2] 战洪仁[2] 寇丽萍[2] 

机构地区：[1]沈阳化工大学数理系,辽宁沈阳110142 [2]沈阳化工大学能源与动力工程学院,辽宁沈阳110142

出　　处：《润滑与密封》2014年第12期89-92,124,共5页Lubrication Engineering

基　　金：国家自然科学基金项目(51275315)

摘　　要：采用有限体积法建立椭圆形轴承流场的数值分析模型,并运用FLUENT求解椭圆形轴承流场,分析轴承椭圆度、偏心率等参数对轴承动特性的影响,并对不同转速下椭圆形轴承的Taylor涡进行研究。结果表明:随着椭圆度的增大,整个轴承-转子系统的稳定性提高;油膜压力随着偏心率近似线性增加;随着转速的增大,湍流Taylor涡开始出现,数目逐渐增加,涡流形状逐渐由规则变为不规则。The numerical model of the flow field of elliptical bearings was built by finite volume method.The effects of the ellipticity and eccentricity on the dynamic characteristics of the bearing film were analyzed,and the Taylor flows of dif-ferent velocities were studied by FLUENT.The results show that,with the increase of ellipticity,the stability of the bearing rotor system is improved.Oil film pressure is increased approximately linearly with the increase of eccentricity.With the in-crease of speed,the turbulent Taylor vortex appears,and the number of vortex is increased gradually,vortex changes from regular shape to irregular shape.

关 键 词：椭圆轴承 流体润滑 偏心率 油膜压力 

分 类 号：TK263.6[动力工程及工程热物理—动力机械及工程] TH117.2[机械工程—机械设计及理论]