Pressure Boundary Layer in a Transient or Steady Gas Film and Mass Interaction

[+] Author and Article Information
F. C. Hsing

Mechanical Technology Inc., Latham, N. Y.

H. S. Cheng

Department of Mechanical Engineering, Northwestern University, Evanston, Ill.

J. Appl. Mech 37(4), 945-953 (Dec 01, 1970) (9 pages) doi:10.1115/1.3408722 History: Received May 02, 1969; Revised December 22, 1969; Online July 12, 2010


This paper presents a numerical scheme capable of yielding accurate pressure profile for the transient and steady hydrodynamic gas film generated by high-speed relative motion of two nonparallel surfaces. The numerical difficulties associated with high compressibility numbers for the gas film Reynolds equation were overcome by employing a set of systematically generated irregular grid spacings based on a coordinate transformation. By coupling the fluid-film solution with the equations of motion of a tilting pad, the dynamics of the mass film interaction were treated. Results are presented for both steady-state and dynamical solutions. Static solutions for a 120-deg partial-arc gas bearing have been used for comparison.

Copyright © 1970 by ASME
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