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RESEARCH PAPERS

Effect of Slip-Flow in Narrow Porous Bearings

[+] Author and Article Information
P. R. K. Murti

Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur, West Bengal, India

J. of Lubrication Tech 95(4), 518-523 (Oct 01, 1973) (6 pages) doi:10.1115/1.3451866 History: Received May 02, 1973; Online October 18, 2010

Abstract

The experimental work of Beavers, et al., established that velocity slip takes place over a permeable boundary. The presence of slip flow is taken into account while deriving the appropriate modified Reynolds equation that governs the flow of lubricant in a finite porous bearing. The performance of a thin-walled bearing is then analyzed making use of the narrow bearing approximation. It is found that slip flow adversely affects the load capacity and reduces the friction force on the journal; the attitude angle, however, is not significantly affected. Also the analysis indicates that the effects of velocity slip are prominent when the bearing operates at a lower eccentricity ratio and/or the bearing-matrix has a low permeability.

Copyright © 1973 by ASME
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