Compressible Navier–Stokes Computations for Slider Air-Bearings

[+] Author and Article Information
W. D. Henshaw, L. G. Reyna, J. A. Zufiria

Mathematical Sciences, IBM Thomas J. Watson Research Center, Yorktown Heights, NY 10598

J. Tribol 113(1), 73-79 (Jan 01, 1991) (7 pages) doi:10.1115/1.2920606 History: Received November 22, 1989; Revised August 02, 1990; Online June 05, 2008


Two-dimensional computations of the compressible Navier–Stokes equations are used to study the flow at the inlet and outlet of slider air-bearings operating under conditions typical of computer disk-storage devices. Inlet results show a pressure gain of several times the dynamic pressure of the incoming flow, with the actual value depending on the local Reynolds number. Although the outlet of the slider is characterized by a sudden pressure drop, the numerical results show that for sliders operating at small Mach numbers there is only a small temperature drop. The computations show the position of the separating streamline on the back surface of the slider, which is found to depend on the radius of curvature of the outlet corner. Results are also shown from calculations of the global flow underneath and around a two-dimensional slider.

Copyright © 1991 by The American Society of Mechanical Engineers
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