Research Article
Nov 1981
Bed Load Discharge Coefficient
Authors: Peter Engel and Y. Lam LauAuthor Affiliations
Publication: Journal of the Hydraulics Division
Volume 107, Issue 11
Abstract
Using dimensional analysis, the bed-load discharge coefficient for the case of two-dimensional flow over dunes is expressed in terms of bed-form geometry and the sand size of the bed material. Experiments are conducted in a rectangular flume using artifical dunes and a flow visualization method to measure the flow separation length from which the bed-load coefficients were determined. The results show that the bed-load coefficient is affected significantly by sand-grain size only when the dunes are flat. When dunes are steep, the value of the bed-load coefficient is affected mainly by the dune steepness. Application of the bed-load coefficient results in some improvement of estimating bed load.
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Published In
Journal of the Hydraulics Division
Volume 107 • Issue 11 • November 1981
Pages: 1445 - 1454
Copyright
© 1981 American Society of Civil Engineers.
History
Published in print: Nov 1981
Published online: Feb 3, 2021
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Peter Engel
Research Engr., Environmental Hydr. Sect., Hydr. Sect., Hydr. Div., National Water Research Inst., Burlington, Ontario Canada
Y. Lam Lau
Head, Environmental Hydr. Sect., Hydr. Div., National Water Research Inst., Burlington, Ontario, Canada
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