On the Skin Friction Coefficient for a Fully Rough Flat Plate

[+] Author and Article Information
A. F. Mills, Xu Hang

School of Engineering and Applied Science, University of California, Los Angeles, Calif. 90024

J. Fluids Eng 105(3), 364-365 (Sep 01, 1983) (2 pages) doi:10.1115/1.3241008 History: Received May 11, 1982; Online October 26, 2009


A comparison of the Prandtl-Schlichting formula for skin friction of a fully rough plate with recently obtained experimental data shows an average error of 17.5 percent. It is suggested that the reason for this discrepancy is a failure to account for the wake component of the velocity profile. The integral momentum equation is used to derive a new skin friction theory which when compared to the same data gives an average error of 2.7 percent. A new skin friction formula is proposed which is valid over a wide parameter range.

Copyright © 1983 by ASME
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