For an aerostatic bearing with a multi-hole integrated restrictor, which achieved superior precision lubrication-bearing performance, the fluctuations of the velocity and the pressure of the flow field were investigated. In this paper, the large-eddy simulation method was used to solve the three-dimensional Navier–Stokes equation in the calculation area of the gas film flow field at the orifice outlet of an aerostatic bearing, while the overrelaxation iteration method was used to solve the Reynolds equation in the remaining calculation areas. The influence factors of the flow field, such as the diameter of the orifice, the gas supply pressure and the gas film clearance, were derived and discussed. The results showed that the diameter of the orifice and the gas film clearance of aerostatic bearings with a multi-hole integrated restrictor strongly affected the film flow field near the outlet of the restrictor under a specified gas supply pressure. There was a critical ratio between the gas film clearance and the diameter of the orifice of aerostatic bearings with a multi-hole integrated restrictor, which may be an initial signal and an important parameter of the flow field transition from laminar flow to turbulent flow.

对于具有优异的精密润滑性能的带多孔集成限流器的静压轴承，研究了流速和流场压力的波动。本文采用大涡模拟方法求解空气静压轴承孔口气膜流场计算区域中的三维Navier-Stokes方程，采用过松弛迭代法求解。其余计算区域中的雷诺方程。导出并讨论了流场的影响因素，如孔的直径，供气压力和气膜间隙。结果表明，在给定气体供应压力下，带有多孔集成限流器的空气静压轴承的孔口直径和气膜间隙会严重影响限流器出口附近的膜流场。气膜间隙与带有多孔集成限流器的空气静压轴承的孔口直径之间存在临界比，这可能是初始信号，也是流场从层流到湍流过渡的重要参数。