Hydrodynamic lubrication of finite porous journal bearings-Use of the Brinkman-extended Darcy model

Jaw Ren Lin, Chi Chuan Hwang

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

This paper applies the Brinkman-extended Darcy model (BEDM) to investigate the hydrodynamic lubrication of finite porous journal bearings. A finite difference technique employing the Preconditioned Conjugate Gradient method (PCGM) of iteration is used to solve the modified Reynolds equation. The results show that the influences of viscous shear stresses on the lubrication performance of porous journal-bearing systems are apparent and not negligible. Comparing with those of the Darcy model (DM), the effects of viscous shear stresses of the BEDM provide an increase in the load capacity, as well as a reduction in the friction parameter; and the quantitative effects of the viscous shear stresses on the static characteristics are more pronounced for the cases of large length-to-diameter ratios.

Original languageEnglish
Pages (from-to)631-644
Number of pages14
JournalInternational Journal of Mechanical Sciences
Volume36
Issue number7
DOIs
Publication statusPublished - 1994 Jul

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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