A Study on Flow Phenomena in Mixed Lubrication Regime by Porous Medium Model

[+] Author and Article Information
Sy-Wei Lo

Department of Mechanical Engineering, Robert R. McCormick School of Engineering and Applied Science, Northwestern University, Evanston, IL 60208

J. Tribol 116(3), 640-647 (Jul 01, 1994) (8 pages) doi:10.1115/1.2928895 History: Received June 16, 1992; Revised September 17, 1993; Online June 05, 2008


A porous medium model is basically a macroscopic description of the fluid behavior and is considered more appropriate to the mixed lubrication regime. The present work has successfully combined the flow factor method, porous medium model and continuum percolation theory to investigate the flow phenomena in the mixed lubrication regime. Not only the lubricant flow can be solved but also the anisotropic percolation threshold can be obtained. Instead of the flow factor which is singular near h = 0, the lubricant flux itself is considered. A new definition of the pressure flow factor which is more appropriate to the mixed lubrication realm is suggested.

Copyright © 1994 by The American Society of Mechanical Engineers
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