Research Article
Jul 1980
Low Sediment Transport Rates Over Flat Beds
Publication: Journal of the Hydraulics Division
Volume 106, Issue 7
Abstract
Flat sediment beds composed of lightweight plastic discs were laid under two conditions of water flow, and subsequently eroded as bed load. The low sediment transport rates were correlated with the increasingly applied fluid shear stress, and shown to differ with the two bed laying or initial bed stability conditions. These results were non-dimensionalized to enable application to field situations and comparison with previous studies which used natural density, near-spherical grains as the sediment. Scale parameters were chosen for the dimensionless analysis using the results of a study on the motion of solitary discs and previous solitary grain studies under water flow. Universal curves were finally proposed for predicting a critical dimensionless shear stress at a given low transport rate and bed stability or armoring condition.
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Published In
Journal of the Hydraulics Division
Volume 106 • Issue 7 • July 1980
Pages: 1173 - 1190
Copyright
© 1980 American Society of Civil Engineers.
History
Published in print: Jul 1980
Published online: Feb 3, 2021
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Authors
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Peter A. Mantz
Research Fellow, Dept. of Civ. Engrg., Imperial Coll., London, England
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