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Numerical modeling of suffusion as an interfacial erosion process / Frédéric Golay in European journal of environmental and civil engineering, Vol. 15 N° 8 (Août 2011) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 15 N° 8 (Août 2011) . - pp. 1225-1241 Titre : Numerical modeling of suffusion as an interfacial erosion process Titre original : Modélisation numérique de la suffusion comme une érosion interfaciale Type de document : texte imprimé Auteurs : Frédéric Golay, Auteur ; Stéphane Bonelli, Auteur Année de publication : 2012 Article en page(s) : pp. 1225-1241 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Suffusion  Internal  erosion  Finite  volume  Level-set  Interface  Fictitious  domain Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Suffusion is an internal erosion process which occurs when finer soil particles are detached by seepage flow and start moving within the pore space of larger particles. Suffusion can be viewed as clay/water interface erosion. The aim of this study is to use a numerical model for simulating surface erosion occurring at a fluid/soil interface subject to a flow process at pore scale. Balance equations with jump relations are used. A penalization procedure including a fictitious domain method is used to compute the Stokes flow around obstacles, in order to avoid body-fitted unstructured meshes and instead use fast and efficient finite volume approximations on Cartesian meshes. The evolution of the water/soil interface is described by using a level-set function. The ability of the model to predict suffusion is confirmed by several numerical simulations. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16709 [article] Numerical modeling of suffusion as an interfacial erosion process = Modélisation numérique de la suffusion comme une érosion interfaciale [texte imprimé] / Frédéric Golay, Auteur ; Stéphane Bonelli, Auteur . - 2012 . - pp. 1225-1241. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 15 N° 8 (Août 2011) . - pp. 1225-1241 Mots-clés : Suffusion  Internal  erosion  Finite  volume  Level-set  Interface  Fictitious  domain Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Suffusion is an internal erosion process which occurs when finer soil particles are detached by seepage flow and start moving within the pore space of larger particles. Suffusion can be viewed as clay/water interface erosion. The aim of this study is to use a numerical model for simulating surface erosion occurring at a fluid/soil interface subject to a flow process at pore scale. Balance equations with jump relations are used. A penalization procedure including a fictitious domain method is used to compute the Stokes flow around obstacles, in order to avoid body-fitted unstructured meshes and instead use fast and efficient finite volume approximations on Cartesian meshes. The evolution of the water/soil interface is described by using a level-set function. The ability of the model to predict suffusion is confirmed by several numerical simulations. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16709