Thermohydrodynamic Analysis of Journal Bearings Considering Cavitation and Reverse Flow

[+] Author and Article Information
H. H. Ott, G. Paradissiadis

Department of Mechanical Engineering, Eidgenössische Technische Hochschule Zürich, Zurich, Switzerland

J. Tribol 110(3), 439-447 (Jul 01, 1988) (9 pages) doi:10.1115/1.3261648 History: Received April 12, 1987; Online October 29, 2009


The flow field of a hydrodynamic journal bearing is calculated by the iterative solution of the system of Reynolds and energy equations. In the case of reverse flow at the film inlet, the temperature profile there can not be prescribed as a boundary condition but has to be determined from the flow in the film. This is achieved by a separate integration of the energy equation in the reverse flow area. The flow in the cavitation regions is approximated by a theoretical model leading to a form of the energy equation similar to that for pressure regions, thus enabling the integration of the energy equation over the whole film.

Copyright © 1988 by ASME
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