A Numerical Solution for the Gas Lubricated Full Journal Bearing of Finite Length

Abstract

Numerical solutions of Reynolds' equation pertaining to the finite length journal bearing with a constant unidirectional load and lubricated with a compressible fluid are given. Results are tabulated for the constant viscosity, isothermal case for L/D values of 2, 1, and ½ and design charts applicable over the full range of the compressibility number (λ = μUR/C2Pa) are presented for eccentricity ratios ranging from 0.1 to 0.8. Differences between gas and liquid lubricated bearings are mentioned and the numerical techniques employed discussed. Use of the design charts is illustrated, and the numerical results are compared with an existing approximate analytical solution and some test results available in the literature.