Microdimples generated by laser surface texturing (LST) can be used to enhance performance in hydrostatic gas-lubricated tribological components with parallel surfaces. The pressure distribution and load carrying capacity for a single three-dimensional dimple, representing the LST, were obtained via two different methods of analysis: a numerical solution of the exact full Navier-Stokes equations, and an approximate solution of the much simpler Reynolds equation. Comparison between the two solution methods illustrates that, despite potential large differences in local pressures, the differences in load carrying capacity, for realistic geometrical and physical parameters, are small. Even at large clearances of 5% of the dimple diameter and pressure ratios of 2.5 the error in the load carrying capacity is only about 15%. Thus, for a wide range of practical clearances and pressures, the simpler, approximate Reynolds equation can safely be applied to yield reasonable predictions for the load carrying capacity of dimpled surfaces.
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April 2006
Research Papers
The Validity of the Reynolds Equation in Modeling Hydrostatic Effects in Gas Lubricated Textured Parallel Surfaces
Y. Feldman,
Y. Feldman
Department of Mechanical Engineering,
Technion-Israel Institute of Technology
, Faculty of Mechanical Engineering, Technion City, Haifa, 32000, Israel
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Y. Kligerman,
Y. Kligerman
Mem. ASME
Department of Mechanical Engineering,
e-mail: mermdyk@tx.technion.ac.il
Technion-Israel Institute of Technology
, Faculty of Mechanical Engineering, Technion City, Haifa, 32000, Israel
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I. Etsion,
I. Etsion
Fellow ASME
Department of Mechanical Engineering,
Technion-Israel Institute of Technology
, Faculty of Mechanical Engineering, Technion City, Haifa, 32000, Israel
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S. Haber
S. Haber
Mem. ASME
Department of Mechanical Engineering,
Technion-Israel Institute of Technology
, Faculty of Mechanical Engineering, Technion City, Haifa, 32000, Israel
Search for other works by this author on:
Y. Feldman
Department of Mechanical Engineering,
Technion-Israel Institute of Technology
, Faculty of Mechanical Engineering, Technion City, Haifa, 32000, Israel
Y. Kligerman
Mem. ASME
Department of Mechanical Engineering,
Technion-Israel Institute of Technology
, Faculty of Mechanical Engineering, Technion City, Haifa, 32000, Israele-mail: mermdyk@tx.technion.ac.il
I. Etsion
Fellow ASME
Department of Mechanical Engineering,
Technion-Israel Institute of Technology
, Faculty of Mechanical Engineering, Technion City, Haifa, 32000, Israel
S. Haber
Mem. ASME
Department of Mechanical Engineering,
Technion-Israel Institute of Technology
, Faculty of Mechanical Engineering, Technion City, Haifa, 32000, IsraelJ. Tribol. Apr 2006, 128(2): 345-350 (6 pages)
Published Online: November 3, 2005
Article history
Received:
April 10, 2005
Revised:
November 3, 2005
Citation
Feldman, Y., Kligerman, Y., Etsion, I., and Haber, S. (November 3, 2005). "The Validity of the Reynolds Equation in Modeling Hydrostatic Effects in Gas Lubricated Textured Parallel Surfaces." ASME. J. Tribol. April 2006; 128(2): 345–350. https://doi.org/10.1115/1.2148419
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