基于CFD对气体静压径向轴承动态分析  

Dynamic Analysis of Radial Throttle Pinhole Hydrostatic Bearing Based on CFD

作　　者：范酬 高尚晗[1] 李冰[1] 倪壮 

机构地区：[1]广西科技大学机械工程学院,广西柳州

出　　处：《流体动力学》2018年第4期150-157,共8页International Journal of Fluid Dynamics

基　　金：国家自然科学基金(11562002);广西自然基金(2015GXNSFAA139262);广西研究生创新项目(GKYC201704)。

摘　　要：针对径向节流小孔静压轴承静态分析的局限性,提出了采用大涡模拟(LES)分析静压轴承节流孔附近流场在相邻时刻之间的变化形式,同时通过分析节流孔附近不同位置周向流场变化情况,得到节流孔附近的涡动和涡线随着时间变化的分布图;分析特定位置上的各个参数变化,得出压力参数与速度、马赫数以及涡量变化的关系;最后得出各个参数的波动性对气体静压轴承的振动性有一定关系的结论。In view of the limitations of static analysis of static pressure bearings with radial throttling holes, a large eddy simulation (LES) is proposed to analyze the flow field changes near the aperture of a small hole between adjacent moments. At the same time, the changes in the flow field near the throttle holes in the circumferential position are analyzed, and the small hole throttle Kong Fu is obtained. The relationship between the parameters and the velocity of the eyes, the number of Maher and the variation of the vorticity of the eyes, is obtained by the analysis of the different parameters at different positions. Finally, we get the conclusion that the fluctuation of each parameter is related to the vibration of aerostatic bearing.

关 键 词：气体静压轴承 大涡模拟 流场 涡动 涡线 马赫数 

分 类 号：H1[语言文字—汉语]