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IJAT Vol.12 No.2 pp. 206-214
doi: 10.20965/ijat.2018.p0206
(2018)

Paper:

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

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

*Tohoku University
6-6-1 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8579, Japan

Corresponding author

**South University of Science and Technology, Shenzhen, China

Received:
May 16, 2017
Accepted:
November 30, 2017
Online released:
March 1, 2018
Published:
March 5, 2018
Keywords:
friction-reduction, micro-textured surface, lubrication, orthogonal experimental design
Abstract

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.

Cite this article as:
Y. Sun, S. Xu, T. Kyoizumi, K. Shimada, M. Mizutani, and T. Kuriyagawa, “CFD Analysis of Friction-Reduction Effect of Micro-Textured Surfaces in Lubricant,” Int. J. Automation Technol., Vol.12, No.2, pp. 206-214, 2018.
Data files:
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Last updated on Dec. 11, 2018