螺旋槽止推气体轴承承载能力的数值分析  

Numerical Analysis on the Load Capacity of Gas-Lubricated Spiral-Groove Thrust Bearings

作　　者：柏庄 孙淑凤[1,2] 孙立佳[3] 孙郁[3] 任小坤[3] 王立[1,2] 

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]北京科技大学北京高校节能与环保工程研究中心,北京100083 [3]中国科学院理化技术研究所航天低温推进剂技术国家重点实验室,北京100190

出　　处：《润滑与密封》2014年第1期55-58,63,共5页Lubrication Engineering

基　　金：中央高校基本科研业务费专项资金项目(FRF-SD-12-013A)

摘　　要：运用Fluent流体计算软件,求解螺旋槽止推气体轴承气膜压力分布,将计算得到的承载力与文献结果进行比较,验证计算方法的正确性。分析螺旋槽槽数、螺旋角、槽深、槽长比及槽宽比对轴承承载力的影响。结果表明:在槽区气体因受到压缩存在高压区并因此形成承载力;随着槽数的增加承载力逐渐增大并趋于定值;而对于螺旋角、槽深、槽长比和槽宽比,均存在最佳值使承载力最大。The distribution of air film pressure fields was solved by using computational fluid dynamics software, and the simulation method proposed was validated by comparison of the calculation data of loading force with published results. The effects of the number of grooves, the spiral angle, the groove depth, the ratio of groove length and width on the loading force were investigated. The results indicate that a high pressure area is observed as the gas flowing through the groove is com- pressed, which eventually forms the loading force. The loading force is increased gradually and tends to a constant value with the number of grooves increased, and there is an optimum value for the spiral angle, the groove depth, the ratio of groove length and width to make the loading force the maximum

关 键 词：螺旋槽 气体轴承 压力场 承载力 

分 类 号：TH133.37[机械工程—机械制造及自动化]