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A continuum theory of a lubrication problem with solid particlesThe governing equations for a two-dimensional lubrication problem involving the mixture of a Newtonian fluid with solid particles at an arbitrary volume fraction are developed using the theory of interacting continuua (mixture theory). The equations take the interaction between the fluid and the particles into consideration. Provision is made for the possibility of particle slippage at the boundaries. The equations are simplified assuming that the solid volume fraction varies in the sliding direction alone. Equations are solved for the velocity of the fluid phase and that of the solid phase of the mixture flow in the clearance space of an arbitrary shaped bearing. It is shown that the classical pure fluid case can be recovered as a special case of the solutions presented. Extensive numerical solutions are presented to quantify the effect of particulate solid for a number of pertinent performance parameters for both slider and journal bearings. Included in the results are discussions on the influence of particle slippage on the boundaries as well as the role of the interacting body force between the fluid and solid particles.
Document ID
19930049861
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Dai, Fuling
(NASA Headquarters Washington, DC United States)
Khonsari, M. M.
(Pittsburgh Univ. PA, United States)
Date Acquired
August 16, 2013
Publication Date
March 1, 1993
Publication Information
Publication: ASME, Transactions, Journal of Applied Mechanics
Volume: 60
Issue: 1
ISSN: 0021-8936
Subject Category
Mechanical Engineering
Accession Number
93A33858
Distribution Limits
Public
Copyright
Other

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