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http://dx.doi.org/10.5293/KFMA.2003.6.3.015

Characteristics of Friction Factor for Artificially Roughened Surfaces  

Ha, Tae-Woong (경원대학교 건축설비 기계공학부)
Ju, Young-Chan (경원대학교 건축설비 기계공학부)
Lee, Yong-Bok (한국과학기술연구원 트라이볼로지 연구센터)
Kim, Chang-Ho (한국과학기술연구원 트라이볼로지 연구센터)
Publication Information
The KSFM Journal of Fluid Machinery / v.6, no.3, 2003 , pp. 15-20 More about this Journal
Abstract
For measuring friction factor of artificially-roughened surfaces which are usually applied to damper seals, flat plate test apparatus is designed and fabricated. The measurements of leakage flow and pressure distribution through round-hole patterned specimen with different hole areas are described, and a method is discussed for determining the friction factor experimentally. Results show that the friction factor of the round-hole patterned surface is bigger than that of smooth surface, and increases as increasing the hole area. A empirical friction factor model for the round-hole patterned surface can be descrived by the Moody's friction factor formula.
Keywords
Surface Friction Factor; Flat Plate Tester; Round-hole Pattern Surface; Moody's Friction Factor Formula;
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