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TECHNICAL PAPERS

Two-Dimensional CFD-Analysis of Micro-Patterned Surfaces in Hydrodynamic Lubrication

[+] Author and Article Information
Fredrik Sahlin, Sergei B. Glavatskih, Torbjörn Almqvist, Roland Larsson

Luleå University of Technology, Division of Machine Elements Luleå, SE-971 87, Sweden

J. Tribol 127(1), 96-102 (Feb 07, 2005) (7 pages) doi:10.1115/1.1828067 History: Received November 19, 2003; Revised August 06, 2004; Online February 07, 2005
Copyright © 2005 by ASME
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References

Snegovskii,  F. P., and Bulyuk,  N. G., 1983, “Study of Lubrication of Sliding Bearings With Microgrooves on the Sliding Shafts,” Trenie Iznos, 4(2), pp. 322–329.
Bulyuk,  N. G., 1988, “Thermal Analysis of Sliding Bearing With Micro-Channels on the Shaft Friction Surface,” Trenie Iznos, 9(5), pp. 1007–1018.
Ryk,  G., Kligerman,  Y., and Etsion,  I., 2002, “Experimental Investigation of Laser Surface Texturing for Reciprocating Automotive Components,” Tribol. Trans., 45(4), pp. 444–449.
Glavatskih, S., McCarthy, D., and Sherrington, I., 2003, “Hydrodynamic Performance of a Thrust Bearing With Micro-Patterned Pads,” Tribol. Trans. (submitted).
Etsion,  I., and Halperin,  G., 2002, “A Laser Surface Textured Hydrostatic Mechanical Seal,” Tribol. Trans., 45(3), pp. 430–434.
A. Ronen,  I. E., and Kligerman,  Y., 2001, “Friction-Reducing Surface-Texturing in Reciprocating Automotive Components,” Tribol. Trans., 44(3), pp. 359–366.
Brizmer,  V., Kligerman,  Y., and Etsion,  I., 2003, “A Laser Textured Parallel Thrust Bearing,” Tribol. Trans., 46, July, pp. 397–403.
Arghir,  M., Roucou,  N., Helene,  M., and Frene,  J., 2003, “Theoretical Analysis of the Incompressible Laminar Flow in a Macro-Roughness Cell,” J. Tribol., 125, April, pp. 309–318.
Sahlin, F., 2003, “CFD-Analysis of Hydrodynamic Lubrication of Textured Surfaces,” Master’s thesis, Luleå University of Technology; see also URL http://epubl.luth.se/1402-1617/2003/index.shtml.
Cfx-4 documentation, AEA Technology.
Ferziger, J. H., and Perić, M., 2002, Computational Methods For Fluid Dynamics, 3rd ed., Springer, Berlin.
Shankar,  P. N., and Deshpande,  M. D., 2000, “Fluid Mechanics in the Driven Cavity,” Annu. Rev. Fluid Mech., 32, pp. 93–136.

Figures

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The fluid domain of the cylindrical geometry. Included are the geometrical parameters and boundary conditions.
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The fluid domain of the the splined geometry. Included are the geometrical parameters and boundary conditions.
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Comparison between Navier–Stokes and Stokes solutions for pressure distribution on the upper smooth wall for the cylindrical geometry. w+=0.2 and d+=0.25 for both plots. The vertical dotted lines represent the grove edges.
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Fy+ on a 10-base logarithmic scale as a function of w+ for Navier–Stokes and Stokes solution respectively, d+=0.25
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Upper wall pressure distribution for the cylindrical geometry with w+=0.30. The vertical dotted lines represent the grove edges.
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Upper wall pressure distribution for the splined geometry used with d+=0.25 and w+=0.50. The vertical dotted lines represent the grove edges.
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Streamlines in the cylindrical geometry for different values of d+ are plotted where Re=40 and w+=0.20
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Streamlines in the cylindrical geometry for different values of Re are plotted where d+=0.25 and w+=0.15
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Streamlines in cylindrical geometry for different values of w+. Re=40 and d+=0.75 in all figures.
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Streamlines for Navier–Stokes solution left and Stokes solution right. The cylindrical geometry is used and Re=160 for all.
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Fy+ as a function of w+ for various values of Re for the cylindrical geometry (top) and the splined with xd+=0 (bottom)
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Fy+ for various values of xd+ for the splined geometry
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Fx+ as a function of d+ for the values of w+={*0.15,▹0.2,+0.25,□0.3,×0.35,⋄0.4,▿0.45,▵0.5}. Solid line represents Re=40 and dashed line Re=160.
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Fy+ as a function of d+ for Re=40 and the values of w+={*0.15,▹0.2,+0.25,□0.3,×0.35,⋄0.4,▿0.45,▵0.5}. The cylindrical geometry (top) and the splined (bottom).
Grahic Jump Location
Fy+ as a function of d+ for Re=160 and the values of w+={*0.15,▹0.2,+0.25,□0.3,×0.35,⋄0.4,▿0.45,▵0.5}. The cylindrical geometry (top) and the splined (bottom).

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