A numerical study of high-speed hydrodynamic gas bearing performance is presented using both finite element and finite difference methods. Efficient numerical procedures are developed to analyze diffusive-convective thin film gas flows in some simple geometries. A novel direct finite element formulation employing a new class of shape functions is specially devised to solve the Reynolds equation for compressible fluids. The formulation is as computationally efficient as the classical upwind finite element schemes without introducing artificial diffusion into the solution. Bearing load-capacity, static stiffness coefficients and frequency-dependent force coefficients are calculated for gas-lubricated plane and Rayleigh step slider bearings. [S0742-4787(00)01701-X]
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January 2000
Technical Papers
On the Numerical Modeling of High-Speed Hydrodynamic Gas Bearings
Marco Tulio C. Faria, Assistant Professor,,
Marco Tulio C. Faria, Assistant Professor,
Federal University of Minas Gerais, Department of Mechanical Engineering, Belo Horizonte, MG, Brazil 31270-901
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Luis San Andre´s, Associate Professor,
Luis San Andre´s, Associate Professor,
Texas A&M University, Department of Mechanical Engineering, College Station, Texas 77843-3123
Search for other works by this author on:
Marco Tulio C. Faria, Assistant Professor,
Federal University of Minas Gerais, Department of Mechanical Engineering, Belo Horizonte, MG, Brazil 31270-901
Luis San Andre´s, Associate Professor,
Texas A&M University, Department of Mechanical Engineering, College Station, Texas 77843-3123
Contributed by the Tribology Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS and presented at the STLE/ASME Tribology Conference, Orlando, FL, October 10–13, 1999. Manuscript received by the Tribology Division October 6, 1998; revised manuscript received March 8, 1999. Paper No. 99-Trib-2. Associate Technical Editor: D. P. Fleming.
J. Tribol. Jan 2000, 122(1): 124-130 (7 pages)
Published Online: March 8, 1999
Article history
Received:
October 6, 1998
Revised:
March 8, 1999
Citation
Faria , M. T. C., and Andre´s , L. S. (March 8, 1999). "On the Numerical Modeling of High-Speed Hydrodynamic Gas Bearings ." ASME. J. Tribol. January 2000; 122(1): 124–130. https://doi.org/10.1115/1.555335
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