CFD analysis of friction-reduction effect of micro-textured surfaces in lubricant

Yue Sun, Shaolin Xu, Tomoki Kyoizumi, Keita Shimada, Masayoshi Mizutani, Tsunemoto Kuriyagawa

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


This paper investigates the effects of geometrical features of tailored textures on friction reduction of a surface with a lubricant-film thickness of several to several-tenths micrometers, using the Navier-Stokes equations and the orthogonal experimental design. The results indicate that the surface textured with the selected sawtooth riblets in lubricant can have up to 93.83% less friction than an untextured surface. The thickness of the lubricant film plays the most important role in friction reduction; the height and the ridge angle of the riblets are the secondary factors. The results and principles obtained can potentially be used in the designing of low-friction surfaces in precision machines with transmission parts.

Original languageEnglish
Pages (from-to)206-214
Number of pages9
JournalInternational Journal of Automation Technology
Issue number2
Publication statusPublished - 2018


  • Friction-reduction
  • Lubrication
  • Micro-textured surface
  • Orthogonal experimental design


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