A thermal model for elastohydrodynamic lubrication of rough surfaces

Liming Chang, C. Farnum

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


This paper reports on the development of a thermal model that can be used to analyze transient elastohydrodynamic lubrication (EHL) of rough surfaces. The thermal domain is composed of three sub-domains, including the film region and the two bounding solids with the thermal boundaries placed inside the solids at which the temperature variation is insignificant. The irregular and time-varying sub-domains, primarily due to the presence and motion of rough surfaces, are mapped onto rectangular and time-invariant sub-domains so that numerical methods can be easily applied. A control-volume approach is taken to formulate the interfacial conditions between the lubricant film and the bounding solids. Finally, a computational algorithm is developed to calculate the temperature field in high-Peclet-number EHl contacts. The calculation yields results that are shown to be meaningful and consistent through extensive evaluations. A substantial amount of numerical results will be presented in a companion paper.

Original languageEnglish (US)
Pages (from-to)281-286
Number of pages6
JournalTribology Transactions
Issue number2
StatePublished - Jan 1 1992

All Science Journal Classification (ASJC) codes

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


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