基于Fluent的微孔节流气体静压止推轴承的参数设计与研究

为提高气体静压止推轴承的静态特性,针对所提出的微孔节流气体静压止推轴承,采用基于有限体积法的CFD软件Fluent进行三维建模仿真,分析了供气孔数目n、量纲一的供气孔分布半径M、供气孔直径d对轴承静态特性的影响规律。按照最大刚度原则,得到如下结论:供气孔数目n在180附近、量纲一的供气孔分布半径M约为0.7、供气孔直径d取最大值0.1 mm时,微孔节流气体静压止推轴承的静态特性最佳。

Research on Parameters Design of Micro-orifice Restrictor Aerostatic Thrust Bearings Based on Fluent

In order to improve the static characteristics of the aerostatic thrust bearings, the Fluent in CFD software based on finite volume method was used to simulate the three-dimensional modeling of the micro-orifice restrictor aerostatic thrust bearings. The effects of the orifice number n, non-dimensional orifice distribute radius M and the orifice diameter d on the static characteristics of the bearings were studied. According to the principle of maximum static stiffness, the following conclusions are obtained that when the orifice number n is about 180, non-dimensional orifice distribute radius M is about 0.7, orifice diameter d is 0.1 mm, the static characteristics of the micro-orifice restrictor aerostatic thrust bearings are optimum.