Research Article
Jul 1969
Friction-Factors for Flat-Bed Flows in Sand Channels
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VIEW THE REPLYPublication: Journal of the Hydraulics Division
Volume 95, Issue 4
Abstract
A method is developed for determining friction factors of open channel flows over flat sand beds in an active state of transport. The graphical predictor is derived from both field and laboratory data, and is presented in a format similar to that of the Moody pipe-friction diagram. The variation of friction factor with Reynolds number for constant values of the ratio of hydraulic radius to median sediment size was found to be much different for these flows than for one-phase flows in rigid-boundary conduits.
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Published In
Journal of the Hydraulics Division
Volume 95 • Issue 4 • July 1969
Pages: 1227 - 1234
Copyright
© 1969 American Society of Civil Engineers.
History
Published in print: Jul 1969
Published online: Feb 3, 2021
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Authors
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Federico Lovera, AM.ASCE
Grad. Student, Dept. of Mechanics and Hydraulics, The Univ. of Iowa, Iowa City
John F. Kennedy, M.ASCE
Dir., Inst. of Hydraulic Research, The Univ. of Iowa, Iowa City
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