RESEARCH PAPERS: Petroleum Fluid Mechanics

A Review of Explicit Friction Factor Equations

[+] Author and Article Information
D. J. Zigrang

Department of Mechanical Engineering, The University of Tulsa, 600 South College, Tulsa, Okla. 74104

N. D. Sylvester

Department of Chemical Engineering, The University of Tulsa, 600 South College, Tulsa, Okla. 74104

J. Energy Resour. Technol 107(2), 280-283 (Jun 01, 1985) (4 pages) doi:10.1115/1.3231190 History: Received July 23, 1984; Revised February 08, 1985; Online October 22, 2009


A review of the explicit friction factor equations developed to replace the Colebrook equation is presented. Explicit friction factor equations are developed which yield a very high degree of precision compared to the Colebrook equation. A new explicit equation, which offers a reasonable compromise between complexity and accuracy, is presented and recommended for the calculation of all turbulent pipe flow friction factors for all roughness ratios and Reynold’s numbers.

Copyright © 1985 by ASME
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