柱面气膜密封性能的CFD数值分析  

CFD Numerical Simulation of Cylinder Gas Film Seal Properties

作　　者：苏泽辉 刘美红[1] 

机构地区：[1]昆明理工大学机电工程学院,云南昆明650500

出　　处：《润滑与密封》2016年第9期49-53,共5页Lubrication Engineering

基　　金：国家自然科学基金项目(51165014);云南省科技计划项目(2012FB130);云南省教育厅科学研究基金项目(2012Y540)

摘　　要：建立柱面气膜密封的参数化模型,研究柱面结构对密封性能的影响。结果表明,随着偏心率的增大,柱面气膜密封的气膜浮升力、最大压力均增大,当偏心率为0.7时柱面气膜密封具有最佳的流体动压效应。研究偏心率为0.7时转速对柱面气膜密封性能的影响。结果表明,低速运行时,柱面气膜密封有微小的流体动压效应;当转速升高时,流体动压效应增强;当转速达到一定值时,流体动压效应趋于稳定。The parameterized model of cylinder gas film seal was established,and the effect of cylindrical structure on sealing performance was studied. The results show that,with the increasing of eccentricity ratio,the gas film lift pressure and the maximum pressure are all increased,and the best fluid dynamic pressure effect is got when the eccentricity ratio is 0.7. The influence of rotate rate on cylindrical gas film seal properties was studied under the eccentricity ratio of 0.7. The results show there is small fluid dynamic pressure effect at low rotate speed,and with the increasing of rotate speed,the fluid dynamic pressure effect is enhanced. When the rotate speed reaches a certain value,the fluid dynamic pressure effect tends to be stable.

关 键 词：柱面气膜 偏心率 动压效应 密封性能 

分 类 号：V233.42[航空宇航科学与技术—航空宇航推进理论与工程]