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TECHNICAL PAPERS

The Effect of Shear Flow and Dissolved Gas Diffusion on the Cavitation in a Submerged Journal Bearing

[+] Author and Article Information
M. Groper, I. Etsion

Dept. of Mechanical Engineering, Technion, Haifa 32000, Israel

J. Tribol 123(3), 494-500 (Jun 30, 2000) (7 pages) doi:10.1115/1.1308026 History: Received February 25, 2000; Revised June 30, 2000
Copyright © 2001 by ASME
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References

Dowson,  D., and Taylor,  C. M., 1979, “Cavitation in Bearings,” Annu. Rev. Fluid Mech., 11, pp. 35–66.
Brewe, D. E., 1988, Current Research in Cavitating Fluid Films (NASA Technical Memorandum 103184).
Heshmat,  H., 1991, “The Mechanism of Cavitation in Hydrodynamic Lubrication,” Tribol. Trans., 34, No. 2, pp. 177–186.
Etsion,  I., and Ludwig,  L. P., 1982, “Observation of Pressure Variation in the Cavitation Region of Submerged Journal Bearings,” ASME J. Lubr. Technol., 104, pp. 157–163.
Braun,  M. J., and Hendricks,  R. C., 1984, “An Experimental Investigation of the Vaporous/Gaseous Cavity Characteristics of an Eccentric Journal Bearing,” Tribol. Trans., 27, No. 1, pp. 1–14.
Yu,  Q., and Keith,  G., 1994, “A Boundary Element Cavitation Algorithm,” Tribol. Trans., 37, No. 2, pp. 217–226.
Mistry,  K., Biswas,  S., and Athre,  K., 1997, “A New Theoretical Model for Analysis of the Fluid Film in the Cavitation Zone of a Journal Bearing,” ASME J. Tribol., 119, pp. 741–746.
Ramesh,  J., Majumdar,  B. C., and Rao,  N. S., 1997, “Thermohydrodynamic Analysis of Submerged Oil Journal Bearings Considering Surface Roughness Effects,” ASME J. Tribol., 119, pp. 100–106.
Coyne,  J. C., and Elrod,  H. G., 1970, “Conditions for the Rupture of a Lubricating Film, Part 1: Theoretical Model,” ASME J. Lubr. Technol., 92, pp. 451–456.
Coyne,  J. C., and Elrod,  H. G., 1971, “Conditions for the Rupture of a Lubricating Film, Part 2: New Boundary Conditions for Reynolds’ Equation,” ASME J. Lubr. Technol., 93, pp. 156–167.
Nau,  B. S., 1980, “Observation and Analysis of Mechanical Seal Film Characteristics,” ASME J. Lubr. Technol., 102, pp. 341–349.
Sun,  D. C., and Brewe,  D. E., 1992, “Two Reference Time Scales for Studying the Dynamic Cavitation of Liquid Films,” ASME J. Tribol., 114, pp. 612–615.

Figures

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Description of lubricant separation and the creation of a liquid/gas interface 9
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A schematic cross section of the cavitation region in a submerged journal bearing
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Boundary of the cavity—schematic description
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Flow rate balance over the control volume located between the bearing edge z=L/2 and the cavitation boundary
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Model for diffusion effect
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Diffusion effect—flow balance across the control volume
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Predicted versus measured 4 cavity boundary
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Predicted versus measured 4 cavity pressure field (at the bearing center)

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