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RESEARCH PAPERS

A Theory of Hydrodynamic Lubrication Involving the Mixture of Two Fluids

[+] Author and Article Information
F. Dai, M. M. Khonsari

Department of Mechanical Engineering, University of Pittsburgh, Pittsburgh, PA 15261

J. Appl. Mech 61(3), 634-641 (Sep 01, 1994) (8 pages) doi:10.1115/1.2901507 History: Received February 10, 1992; Revised April 19, 1993; Online March 31, 2008

Abstract

Based on the principles of continuum mechanics, we drive the governing equations for the hydrodynamic lubrication involving the mixture of two incompressible fluids. The governing equations are general in the sense that they can be applied to the mixture of any simple non-Newtonian fluid with a Newtonian fluid. A mixture thus formed is considered to be nonhomogeneous and non-Newtonian. In the theoretical development, the interaction between the constituents is taken into consideration. It is shown that a number of currently available models are special cases of the theory presented in this paper. As an example, results are presented for journal bearing performance lubricated with a mixture of a power-law fluid mixed with Newtonian oil.

Copyright © 1994 by The American Society of Mechanical Engineers
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