Nodal Point Relation for the Distribution of Sediments at Channel Bifurcation
Publication: Journal of Hydraulic Engineering
Volume 132, Issue 10
Abstract
This technical note explores the applicability of the general nodal point relation to describe the distribution of sediments at channel bifurcation. Experiments were conducted in a physical model of channel bifurcation to estimate the coefficient and exponent of the nodal point relation for different nose angles and upstream discharges. It was found that the nose angle is the major variable for the distribution of sediments to the downstream branches. The value of the exponent found from experimental results was compared with that of a theoretical analysis. For a stable equilibrium, the value of is greater than from theoretical consideration when the Engelund–Hansen sediment transport formula is used. This was confirmed from the experimental results. This suggests that the distribution of sediments at channel bifurcation can be expressed by the general nodal point relation.
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Acknowledgments
The writers are grateful to the Netherlands Organization for International Cooperation in Higher Education (NUFFIC) for providing financial support in constructing the experimental setup of the model. They are also grateful to Professor M. de Vries, former professor of Delft Technical University of the Netherlands for his guidance in setting up the experimental model and providing valuable advice in conducting the study. The scholarship provided to the first writer by the Lamminga Foundation of the Netherlands is also gratefully acknowledged.
References
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 132 • Issue 10 • October 2006
Pages: 1105 - 1109
Copyright
© 2006 ASCE.
History
Received: Jan 3, 2005
Accepted: Oct 12, 2005
Published online: Oct 1, 2006
Published in print: Oct 2006
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