Influence of the Gas-film Inertia Forces on the Dynamic Characteristics of Externally Pressurized, Gas Lubricated Journal Bearings : Part l, Proposal of Governing Equations

Abstract

The conventional analyses based on the classical Reynolds equation are incomplete to get five predictions of the dynamic characteristics of externally pressurized gas bearings. This seems to be attributed to the fact that the Reynolds equation ignores entirely the inertia forces of the gas-film. This paper process modified Reynolds equations, which are derived by averaging out the inertia forces in Navier-Stokes equations across the film thickness, and their adequate boundary conditions, in order to determine the influence of the inertia forces on the dynamic characteristics such as the whirl instability and the squeeze damping.