Open AccessCFD Analysis of Friction-Reduction Effect of Micro-Textured Surfaces in Lubricant
Author(s) -
Yue Sun,
Shaolin Xu,
Tomoki Kyoizumi,
Keita Shimada,
Masayoshi Mizutani,
Tsunemoto Kuriyagawa
Publication year - 2018
Publication title -
international journal of automation technology
Language(s) - English
Resource type - Journals
eISSN - 1883-8022
pISSN - 1881-7629
DOI - 10.20965/ijat.2018.p0206
Subject(s) - lubricant , materials science , sawtooth wave , reduction (mathematics) , ridge , surface (topology) , composite material , lubrication , surface finish , mechanical engineering , geometry , computer science , engineering , geology , mathematics , paleontology , computer vision
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.
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