Solution of the Rarefied Gas Lubrication Equation Using an Additive Correction Based Multigrid Control Volume Method

[+] Author and Article Information
Yong Hu

Quinta Corporation, 1870 Lundy Avenue, San Jose, CA 95131

David B. Bogy

Computer Mechanics Laboratory, Department of Mechanical Engineering, University of California, Berkeley, CA 94720

J. Tribol 120(2), 280-288 (Apr 01, 1998) (9 pages) doi:10.1115/1.2834423 History: Received August 15, 1996; Revised March 20, 1997; Online January 24, 2008


The ever shortening product cycle for magnetic recording disk drives demands a fast and accurate numerical prediction of the slider’s flying characteristics during the design stage. A computationally efficient multigrid control volume method is developed in this paper for the solution of the very high bearing number and shaped rail air bearing problems. The control volume schemes for discretizing the Reynolds lubrication equation are based on various convection-diffusion formulations, while the solution of the resulting discretization equations is accelerated by an additive correction based multigrid method. A comparison study using the 50 percent tripad and Headway AAB sliders demonstrates a significant improvement in the solver’s performance as compared to the single-grid method.

Copyright © 1998 by The American Society of Mechanical Engineers
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