Inertia Effect in Hydrodynamic Lubrication With Film Rupture

[+] Author and Article Information
H. I. You

Department of Mechanical Engineering, National Chung-Hsing University, Taichung, Taiwan, Republic of China

S. S. Lu

Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan, Republic of China

J. Tribol 109(1), 86-90 (Jan 01, 1987) (5 pages) doi:10.1115/1.3261333 History: Received October 16, 1985; Online October 29, 2009


The modified Reynolds equation in conjunction with the modified Coyne-Elrod rupture model is used to investigate the inertia effect on the pressure distribution in converging-diverging bearings. The modified Reynolds equation is solved analytically for infinitely long bearings, including the cylinder-plane bearing and the journal bearing. The results showed that the fluid inertia tends to stretch the fluid film and to move the film rupture point farther downstream. The effects are profound even at a moderate value of the reduced Reynolds number, Re* ≈ 0.13 based on the minimum film thickness.

Copyright © 1987 by ASME
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