User menu

Accès à distance ? S'identifier sur le proxy UCLouvain

One-dimensional model for transient flows involving bed-load sediment transport and changes in flow regimes

Primary tabs

Goutière, Laurent [UCL] Soares Frazao, Sandra [UCL] Savary, C. [UCL] Laraichi, T. [UCL] Zech, Yves [UCL]

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.

Document type Article de périodique (Journal article) – Article de recherche
Publication date 2008
Language Anglais
Journal information "Journal of Hydraulic Engineering (New York)" - Vol. 134, no. 6, p. 726-735 (2008)
Peer reviewed yes
Publisher Asce-amer Soc Civil Engineers (Reston)
issn 0733-9429
e-issn 1943-7900
Publication status Publié
Affiliation UCL - FSA/AUCE - Département d'architecture, d'urbanisme et de génie civil environnemental
Links
Bibliographic reference Goutière, Laurent ; Soares Frazao, Sandra ; Savary, C. ; Laraichi, T. ; Zech, Yves. One-dimensional model for transient flows involving bed-load sediment transport and changes in flow regimes. In: Journal of Hydraulic Engineering (New York), Vol. 134, no. 6, p. 726-735 (2008)
Permanent URL http://hdl.handle.net/2078.1/36585