Research Article
Jul 1966
Resistance Relationships for Alluvial Channel Flow
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VIEW THE REPLYAuthors: R. J. Garde and K. G. Ranga RajuAuthor Affiliations
Publication: Journal of the Hydraulics Division
Volume 92, Issue 4
Abstract
The problem of resistance to flow over alluvial beds has received considerable attention during the post-war years. Almost all the problems associated with alluvial channels—e.g., preparation of stage-discharge curves, determination of sediment transport rates, design of stable channels, prediction of aggradation and degradation due to the presence of hydraulic structures—require an accurate resistance law for their solution. The resistance of channels with a rigid bed has been defined accurately by relationships given by Keulegan and Manning. But the extensive data collected an alluvial channels in recent years have indicated large variations in the values of n, Manning’s coefficient, and KS, the equivalent sand-grain roughness of the bed, for a particular channel under different flow conditions; also, the variation of these parameters with the flow conditions has not yet been satisfactorily predicted.
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Published In
Journal of the Hydraulics Division
Volume 92 • Issue 4 • July 1966
Pages: 77 - 100
Copyright
© 1966 American Society of Civil Engineers.
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Published in print: Jul 1966
Published online: Feb 3, 2021
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R. J. Garde
Reader in Civ. Engrg., Univ. of Roorkee, Roorkee, India
K. G. Ranga Raju
Lecturer in Civ. Engrg., Univ. of Roorkee, Roorkee, India
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