抄録
The pressure depression is usually observed just after the gas supply hole. In order to improve the pressure distribution, a new type of aerostatic bearing (NT) is designed, which has a tapered chamber at the outlet of the gas supply hole. The Fluent software is used to simulate the working conditions of aerostatic bearings. The simulation results show the simulation method can effectively estimate the pressure depression and the pressure distribution of the NT is remarkably improved compared with the traditional annular orifice type (TT). It's found that the characteristics of the Mach Number (MN) distribution of the NT are different from those of the TT and the tapered chamber can effectively reduce the velocity at the bearing clearance entrance. A test rig is built. Thepressure distributions are tested and the simulation results of the NT agree well with the experimental results. The simulation method provides a good theoretical method to study the aerostatic bearings and the new design will be helpful to the development of high load capacity aerostatic bearings.
