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Un Modèle simple d'injection diphasique avec phase condensable

L'objectif de cette note est de proposer un modèle mathématique simple permettant de comprendre l'arrêt de la pénétration d'un flux de vapeur d'eau condensable sur un mur de béton, observé expérimentalement (voir par exemple les différentes expériences d'injection de vapeur dans du béton présentées dans [11], et [7]). Un modèle homogénéisé simple d'injection dans un milieu poreux est proposé, donnant une borne pour la position asymptotique en temps du front de pénétration. The aim of this paper is to propose a simple mathematical model to understand the decision of the penetration of a stream of water vapor condensing on a concrete wall, observed experimentally (see for example the situations described in [11], and [7]). A simple homogenized model for the injection in a porous medium is proposed, giving a bound for the asymptotic-time position at the front of penetration.

preprint2010arXivOpen access
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