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Université d'Orléans |  |
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Université d'Orléans | |
| HAL : hal-00687689, version 1 |
| arXiv : 1204.3210 |
| Fiche détaillée |  Récupérer au format |
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| Versions disponibles : | v1 (14-04-2012) | v2 (27-09-2012) |
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| FullSWOF: A software for overland flow simulation / FullSWOF : un logiciel pour la simulation du ruissellement |
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Olivier Delestre 1Stéphane Cordier 2 |
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| (13/04/2012) |
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| Overland flow on agricultural fields may have some undesirable effects such as soil erosion, flood and pollutant transport. To better understand this phenomenon and limit its consequences, we developed a code using state-of-the-art numerical methods: FullSWOF (Full Shallow Water equations for Overland Flow), an object oriented code written in C++. It has been made open-source and can be downloaded from http://www.univ-orleans.fr/mapmo/soft/FullSWOF/. The model is based on the classical system of Shallow Water (SW) (or Saint-Venant system). Numerical difficulties come from the numerous dry/wet transitions and the highly-variable topography encountered inside a field. It includes runon and rainfall inputs, infiltration (modified Green-Ampt equation), friction (Darcy-Weisbach and Manning formulas). First we present the numerical method for the resolution of the Shallow Water equations integrated in FullSWOF_2D (the two-dimension version). This method is based on hydrostatic reconstruction scheme, coupled with a semi-implicit friction term treatment. FullSWOF_2D has been previously validated using analytical solutions from the SWASHES library (Shallow Water Analytic Solutions for Hydraulic and Environmental Studies). Finally, FullSWOF_2D is run on a real topography measured on a runoff plot located in Thies (Senegal). Simulation results are compared with measured data. This experimental benchmark demonstrate the capabilities of FullSWOF to simulate adequately overland flow. FullSWOF could also be used for other environmental issues, such as river floods and dam-breaks. |
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| 1 : | Laboratoire Jean Alexandre Dieudonné (JAD) |
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CNRS : UMR6621 – Université Nice Sophia Antipolis [UNS] |
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| 2 : | Mathématiques - Analyse, Probabilités, Modélisation - Orléans (MAPMO) |
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Université d'Orléans – CNRS : UMR7349 |
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| 3 : | Unité de recherche Science du Sol (USS) |
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Institut national de la recherche agronomique (INRA) : UR0272 |
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| 4 : | Polytech Nice - Sophia |
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Université Nice Sophia Antipolis [UNS] |
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| 5 : | Institut de Recherche pour le Developpement (IRD) |
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Kasetsart University – Institut de recherche pour le développement [IRD] |
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| Domaine | : | Mathématiques/Analyse numérique Informatique/Analyse numérique Informatique/Modélisation et simulation Mathématiques/Equations aux dérivées partielles |
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| Rainfall runoff – Shallow Water system – well-balanced scheme – hydrostatic reconstruction – finite volumes – dry/wet transition – Green-Ampt – HLL – MUSCL reconstruction |
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| Liste des fichiers attachés à ce document : | |||||
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| hal-00687689, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00687689 | |
| oai:hal.archives-ouvertes.fr:hal-00687689 | |
| Contributeur : Olivier Delestre | |
| Soumis le : Vendredi 13 Avril 2012, 20:01:58 | |
| Dernière modification le : Samedi 14 Avril 2012, 22:27:31 | |
