Pressure and Shear Flow in a Rough Hydrodynamic Bearing, Flow Factor Calculation

[+] Author and Article Information
L. Lunde, K. To̸nder

University of Trondheim, The Norwegian Institute of Technology Trondheim, Norway

J. Tribol 119(3), 549-555 (Jul 01, 1997) (7 pages) doi:10.1115/1.2833536 History: Received September 12, 1995; Revised April 12, 1996; Online January 24, 2008


The lubrication of isotropic rough surfaces has been studied numerically, and the flow factors given in the so-called Average Flow Model have been calculated. Both pressure flow and shear flow are considered. The flow factors are calculated from a small hearing part, and it is shown that the flow in the interior of this subarea is nearly unaffected by the bearing part’s boundary conditions. The surface roughness is generated numerically, and the Reynolds equation is solved by the finite element method. The method used for calculating the flow factors can be used for different roughness patterns.

Copyright © 1997 by The American Society of Mechanical Engineers
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