21734 articles – 15570 Notices  [english version]

hal-00598932, version 2

A two time-scale model for tidal bed-load transport

Stéphane Cordier () 1, Carine Lucas () a1, Jean De Dieu Zabsonré () 2

Communications in Mathematical Sciences 10, 3 (2012) 875-888

Résumé : The aim of this article is to derive a simplified sedimentation model thanks to an asymptotic analysis. We consider a two time scale erosion process due to tidal effects and we show that the approximation at the first order can model bed-load transport well. To this end, the simplified model is validated through numerical tests (evolution of a dune submitted to tidal effects in the ocean, run up near the coast) and compared to direct simulations that are very expensive in terms of computation time.

  • a –  Université d'Orléans
  • 1 :  Mathématiques - Analyse, Probabilités, Modélisation - Orléans (MAPMO)
  • Université d'Orléans – CNRS : UMR7349
  • 2 :  ISEA
  • Université Polytechnique de Bobo-Dioulasso
  • Domaine : Mathématiques/Analyse numérique
  • Mots-clés : Shallow-Water Equations – bed-load transport – Exner equation – asymptotic developments – non-dimensional form – limit model – finite volumes scheme
  • Versions disponibles :  v1 (08-06-2011) v2 (11-04-2012)
 
  • hal-00598932, version 2
  • oai:hal.archives-ouvertes.fr:hal-00598932
  • Contributeur : 
  • Soumis le : Mardi 10 Avril 2012, 22:18:26
  • Dernière modification le : Mercredi 11 Avril 2012, 08:23:52