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TECHNICAL PAPERS

Friction Factor Directly From Roughness Measurements

[+] Author and Article Information
Elling Sletfjerding

Statoil Research Center, 7005 Trondheim, Norwaye-mail: esle@statoil.com

Jon Steinar Gudmundsson

Department of Petroleum Engineering and Applied Geophysics, Norwegian University of Technology and Science, 7491 Trondheim, Norwaye-mail: jsg@ipt.ntnu.no

J. Energy Resour. Technol 125(2), 126-130 (Jun 04, 2003) (5 pages) doi:10.1115/1.1576264 History: Received April 01, 2001; Revised December 01, 2002; Online June 04, 2003
Copyright © 2003 by ASME
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References

Figures

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Power spectral density of measured wall roughness pipe 5-8
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Measured friction factor in test pipes: o: coated pipe (series 1), &: coated pipe (series 2) x: steel pipe, +: pipe 3, ♥: pipe 4, □:pipe 8, (:pipe 5, ≕ pipe 6, <: pipe 7, line: Zagarola friction factor
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Correlations between (1/f)1/2 and log(r/k) for the different roughness measures
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Power spectral density of measured wall roughness pipe 1-4
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Test pipes used in the flow measurements
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Schematic view of the flow loop

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