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Computational fluid dynamics analysis of a journal bearing with surface texturing
Luleå University of Technology, Division of Machine Elements.
2008 (English)In: Proceedings of the Institution of mechanical engineers. Part J, journal of engineering tribology, ISSN 1350-6501, Vol. 222, no 2, 97-107 p.Article in journal (Refereed) Published
Abstract [en]

An analysis of a lubricated conformal contact is carried out to study the effect of surface texture on bearing friction and load carrying capacity using computational fluid dynamics. The work focuses on a journal bearing with several dimples. Two- and three-dimensional bearing geometries are considered. The full Navier-Stokes equations are solved under steady-state conditions with a multi-phase flow cavitation model. The coefficient of friction can be reduced if a texture of suitable geometry is introduced. This can be achieved either in the region of maximum hydrodynamic pressure for a bearing with high eccentricity ratio or just downstream of the maximum film for a bearing with low eccentricity ratio. An additional pressure build-up produced as a result of the surface texture has been shown at low eccentricity ratios.

Place, publisher, year, edition, pages
2008. Vol. 222, no 2, 97-107 p.
Keyword [en]
journal bearing, textured surface, friction, cavitation, load carrying capacity
National Category
Tribology Fluid Mechanics and Acoustics
URN: urn:nbn:se:kth:diva-80644DOI: 10.1243/13506501JET319ISI: 000255235400004OAI: diva2:496707
QC 20120215Available from: 2012-02-10 Created: 2012-02-10 Last updated: 2012-02-15Bibliographically approved

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Glavatskih, Sergei
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