Gas-Lubricated Porous Bearings—Infinitely Long Journal Bearings, Steady-State Solution

[+] Author and Article Information
Erh-Rong Wu, V. Castelli

Dept. of Mech. Eng., Columbia University, New York, N. Y.

J. of Lubrication Tech 98(3), 453-462 (Jul 01, 1976) (10 pages) doi:10.1115/1.3452886 History: Online October 20, 2010


The general governing equations for finite porous journal bearings with compressible lubricants and slip-flow are derived. A mass content rule is developed for infinitely long porous bearings; an exact solution is established for a gas-lubricated porous bearing with very large bearing number consistent with the mass content rule. An analytic-numerical technique which takes advantage of the linearity of the pressure equation in the porous medium is developed to solve the problem for finite values of compressibility. The results approach those for the solid bearing case as the defined poro-slip parameter β becomes very large.

Copyright © 1976 by ASME
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