A Numerical Approach to Finite Journal Bearings Lubricated With Ferrofluid

[+] Author and Article Information
Francesco Sorge

Istituto di Macchine, Università di Palermo, 90128 Palermo, Italy

J. Tribol 109(1), 77-82 (Jan 01, 1987) (6 pages) doi:10.1115/1.3261331 History: Received October 18, 1985; Online October 29, 2009


Several cases of cylindrical bearings lubricated with ferrofluid are examined by means of a finite-difference numerical procedure. The subregion of cavitation is determined by imposing mass conservation across the “rupture” and “reformation” boundaries of the complete film. The examined cases refer to bearings confined by sealing rings formed by the lubricant itself, for which there is no need of external supply. In each case the most significant parameters are calculated and it is possible to see that the use of these bearings is favorable when speeds are low, clearances large, and loads light, because in such conditions the magnetic effects are comparable with the pure hydrodynamic ones and the load capacity results appreciably higher.

Copyright © 1987 by ASME
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