CFD Analysis of Friction-Reduction Effect of Micro-Textured Surfaces in Lubricant

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 surfac...

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Bibliographic Details
Published inInternational journal of automation technology Vol. 12; no. 2; pp. 206 - 214
Main Authors Sun, Yue, Xu, Shaolin, Kyoizumi, Tomoki, Shimada, Keita, Mizutani, Masayoshi, Kuriyagawa, Tsunemoto
Format Journal Article
LanguageEnglish
Published Tokyo Fuji Technology Press Co. Ltd 05.03.2018
Subjects
Design of experiments
Film thickness
Fluid dynamics
Friction
Friction reduction
Lubricants
Micrometers
Riblets
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Summary: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.
ISSN:1881-7629
1883-8022
DOI:10.20965/ijat.2018.p0206