FullSWOF: A software for overland flow simulation
نویسندگان
چکیده
Le ruissellement sur les terres agricoles peut avoir des effets indésirables tels que l'érosion des sols, les inondations et le transport de polluants. Afin de mieux comprendre ce phénomène et d'en limiter les conséquences, nous avons développé un code à l'aide de méthodes numériques récentes : FullSWOF (Full Shallow Water equations for Overland Flow) un code orienté objet écrit en C++. Il est libre et peut être téléchargé à partir de http://www.univorleans.fr/mapmo/soft/FullSWOF/. Le modèle est basé sur le système de Saint-Venant. Les difficultés numériques viennent des nombreuses transitions sec/mouillé et de la topographie très variable rencontrée sur le terrain. Le code intègre le ruissellement, les précipitations, l'infiltration (Green-Ampt modifié), la friction (les lois de Darcy-Weisbach et de Manning). Nous présentons d'abord la méthode numérique pour la résolution des équations en eaux peu profondes integrée dans FullSWOF_2D (la version en deux dimensions). Cette méthode est basée sur le schéma de reconstruction hydrostatique, couplée à un traitement semi-implite du terme de friction. FullSWOF_2D a déjà été validé à l'aide des
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