CFD Research on Aerostatic Bearing with Tangential Supply Holes
The radial aerostatic bearings with reversely tangential gas supply holes have been proved successfully in some applications to improve the dynamic stability. However, the concept lacks firm theoretical support. Aerostatic bearings with reversely tangential gas supply holes and radial gas supply holes were designed. The finite volume method (FVM) was used to solve the three-dimension flow field, the static characteristics of them were studied, and the following conclusions were drawn: The tangential gas supply holes can improve the pressure distributions in the working clearance, but they can’t effectively improve the load capacity and stiffness. The improvement of the characteristics of aerostatic bearings with tangential gas supply holes is at the expense of excessive gas consumption. For aerostatic bearings, when the eccentricity ( ) is large and the rotor speed ( ) is high, the dynamic effect can effectively improve the load capacity and stiffness.
Zhengyi Jiang and Chunliang Zhang
H. C. Yu et al., "CFD Research on Aerostatic Bearing with Tangential Supply Holes", Advanced Materials Research, Vols. 97-101, pp. 2021-2026, 2010