Some discussion on the flow factor tensor-considerations of roughness orientaton and flow rheology

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Abstract

Relations expressing the effects of roughness orientations (θi) and flow behavior index (n) of the power-law fluid on the flow factors of area-distributed random roughness in hydrodynamic lubrication are derived. By using a mapping function, the generalized average Reynolds equation contains non-diagonal terms, and the flow factor tensor is symmetrical but not necessarily diagonal according to the coordinate system. Finally, the conditions that two rough surfaces act as though they were perfectly smooth are discussed for some particular combinations.

Original languageEnglish
Pages (from-to)869-872
Number of pages4
JournalJournal of Tribology
Volume122
Issue number4
DOIs
Publication statusPublished - 2000 Dec 1

All Science Journal Classification (ASJC) codes

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

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