Lubrication of journal bearings - Influence of stress jump condition at the porous-media/fluid film interface

Ming Da Chen, Kuo Ming Chang, Jau Wen Lin, Wang Long Li

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

In this study, the microstructure of bearing surface is modeled as a thin porous film press-fitted on an impermeable surface. On the basis of the Brinkman-extended Darcy model with stress jump condition at the porous-media/fluid film interface, the effects of viscous shear stress and stress jump on the performance of finite journal bearings are examined. The Elrod algorithm as well as the successive over-relaxation method is utilized to solve the modified Reynolds equation and determine the accurate cavitation region. The results show that the increase in stress jump parameter (β) provides a decrease in the load capacity, an increase in the attitude angle, and an increase in the coefficient of friction.

Original languageEnglish
Pages (from-to)287-295
Number of pages9
JournalTribology International
Volume35
Issue number5
DOIs
Publication statusPublished - 2002 May

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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