hal-00693032, version 1
A SUBSONIC-WELL-BALANCED RECONSTRUCTION SCHEME FOR SHALLOW WATER FLOWS
SIAM Journal on Numerical Analysis 48, 5 (2010) 1733--1758
Résumé : We consider the Saint-Venant system for shallow water flows with nonflat bottom. In past years, efficient well-balanced methods have been proposed in order to well resolve solutions close to steady states at rest. Here we describe a strategy based on a local subsonic steady state reconstruction that allows one to derive a subsonic-well-balanced scheme, preserving exactly all the subsonic steady states. It generalizes the now well-known hydrostatic solver, and like the latter it preserves the nonnegativity of the water height and satisfies a semidiscrete entropy inequality. An application to the Euler-Poisson system is proposed.
- 1 :
- Université Paris-Est Marne-la-Vallée (UPEMLV) – Université Paris-Est Créteil Val-de-Marne (UPEC) – CNRS : UMR8050 – Fédération de Recherche Bézout
- Domaine : Mathématiques/Physique mathématique
- hal-00693032, version 1
- http://hal-upec-upem.archives-ouvertes.fr/hal-00693032
- oai:hal-upec-upem.archives-ouvertes.fr:hal-00693032
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- Soumis le : Mardi 1 Mai 2012, 19:38:55
- Dernière modification le : Mardi 1 Mai 2012, 19:38:55
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DOI : 10.1137/090758416




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