Effects of two film rupture models on the thermal analysis of a journal bearing

Journal Article (Academic article)

A model for the thermal behavior of lubricant in the cavitated regions of a journal bearing is presented. The model assumes a bubbly mixture of liquid and air and includes the calculation of local mixture properties for the fluid film. Temperature in the film is calculated by a first order approximate energy equation that includes heat transfer between the film and its boundaries. A second order profile is assumed to represent the temperature distribution across the film. The classical Reynolds equation is applied, using a viscosity that does not vary across the film. Results of calculations are compared with published experimental results and with a prior theory that uses an effective length calculation in the cavitation zone.

Duke Authors

Cited Authors

  • Knight, JD; Niewiarowski, AJ

Published Date

  • 1990

Published In

  • Journal of Tribology, Transactions of the Asme

Volume / Issue

  • 112 / 2

Start / End Page

  • 183 - 188