One-Dimensional Model for Transient Flows Involving Bed-Load Sediment Transport and Changes in Flow Regimes
Publication: Journal of Hydraulic Engineering
Volume 134, Issue 6
Abstract
This study presents a novel, simple, but rather accurate approximation of the eigenvalues of the system formed by the Saint-Venant–Exner equations, based on the comparison between eigenvalues for the complete system and eigenvalues for the water phase only. Moreover, a strategy is proposed to compute efficiently the intercell fluxes by properly adapting a Harten, Lax, and van Leer scheme for each equation. Two examples of transient transcritical flows are developed: the erosive migration of a knickpoint induced by an increase in the bed slope, and the evolution of a hydraulic jump over a mobile bed.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 134 • Issue 6 • June 2008
Pages: 726 - 735
Copyright
© 2008 ASCE.
History
Received: Jan 13, 2007
Accepted: Sep 12, 2007
Published online: Jun 1, 2008
Published in print: Jun 2008
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