THD Analysis in Tilting-Pad Journal Bearings Using Multiple Orifice Hybrid Lubrication

[+] Author and Article Information
I. F. Santos, R. Nicoletti

UNICAMP-Universidade Estadual de Campinas, FEM-Faculdade de Engenharia Mecânica, DPM-Departamento de Projeto Mecânico, 13083-970. Campinas, SP, Brazil

J. Tribol 121(4), 892-900 (Oct 01, 1999) (9 pages) doi:10.1115/1.2834152 History: Received January 22, 1998; Revised July 27, 1998; Online January 24, 2008


Tilting pad journal bearings (TPJB) using multiple orifice hybrid lubrication are analyzed applying a thermohydrodynamic (THD) theory. Adiabatic boundary conditions are adopted, and a two-dimensional model is used to represent the fluid flow behavior in the bearing gap. The influence of operational conditions on the temperature distribution and on the bearing load capacity is discussed and compared to theoretical and experimental values for a conventional hydrodynamic case (without radial oil injection). To improve the cooling effects, as well as rotor attitudes, the best location for orifices is the area near the pad edges.

Copyright © 1999 by The American Society of Mechanical Engineers
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