A two-phase flow approach to cavitation modelling in journal bearings

Cavitation has been extensively treated in numerical models for lubrication using boundary conditions in the pressure equation, and several criteria are available. However, an inappropriate choice can lead to imprecise results, thus having serious implications for performance prediction. This work p...

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Bibliographic Details
Published inTribology letters Vol. 21; no. 3; pp. 233 - 244
Main Authors Grando, F. P., Priest, M., Prata, A. T.
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Nature B.V 01.03.2006
Subjects
Boundary conditions
Cavitation
Journal bearings
Lubricants
Lubricants & lubrication
Lubrication
Mathematical models
Numerical models
Performance prediction
Tribology
Two phase flow
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Summary:Cavitation has been extensively treated in numerical models for lubrication using boundary conditions in the pressure equation, and several criteria are available. However, an inappropriate choice can lead to imprecise results, thus having serious implications for performance prediction. This work proposes the numerical solution for lubrication analysing the changes suffered by the lubricant along a journal bearing, considering the release of gas from the liquid and the existence of a two-phase flow. Results obtained are compared with those using the Reynolds, or Swift-Steiber, boundary condition. The influence of fluid properties on the main parameters of bearing operation is also discussed.
ISSN:1023-8883
1573-2711
DOI:10.1007/s11249-006-9027-6