| Issue |
La Houille Blanche
Number 3, Juin 2008
|
|
|---|---|---|
| Page(s) | 33 - 38 | |
| Section | IXes Journées Nationales de génie civil et génie côtier - Brest, 11-14 Septembre 2006 | |
| DOI | https://doi.org/10.1051/lhb:2008024 | |
| Published online | 10 July 2008 | |
Modélisation de la formation et de l’évolution non linéaire des barres en croissant de la cote aquitaine
Modelling the formation and the nonlinear evolution of crescentic bars of the Aquitanian coast.
1
University of Nottingham School of Civil Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
2
Université Bordeaux 1 CNRS ; UMR 5805 EPOC, avenue des Facultés, F-33405, Talence, France
3
Universitat Politècnica de Catalunya Departament de Física Aplicada, C/ Jordi Girona 1-3, Mòdul B4/B5, E-08034, Barcelona, Spain
Auteur de correspondance : Roland.Garnier@nottingham.ac.uk
Crescentic bars emerge as free instabilities of the coupling between topography and water motion. Their long term behaviour will be studied in the real case of the French Aquitaine beaches by using the 2DH numerical model MORFO55. For the first time, the equilibrium state of a crescentic bar system is obtained, in the case of steady incident wave conditions. Due to non linear interactions, the final wave length of the system does not inevitably increase with the incident wave height. Finally, the study of variable incident wave conditions suggests that the equilibrium state may depend on the initial conditions.
© Société Hydrotechnique de France, 2008