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Modèles pseudo-diphasiques de transport facilité des colloïdes en milieux faiblement perméables

Abstract : The aim of this PhD thesis is to create and to develop a colloid suspension transport model in the saturated porous media that will be able to detect and to predict the apparition of the difference between water and suspension velocity; to distinguish cases of acceleration and of deceleration of the colloidal particles and also to calculate the two velocities using the initial information on the properties of porous media and of particles. We are proceeded by two different manners. Firstly, we are proposed an analytical method of calculation of enhancement velocity factor that can be introduced in the classic colloid transport model that is single-phase one. Secondly, we are proposed a new phenomenological mathematical approach to describe a colloid transport. To develop this approach, we are used the fact that two velocities appear automatically in the two-phase transport model. Thus our model must be similar to two-phase one. Therefore, for our mathematical model we are refused the traditional approach that assumes a transport of a single-phase liquid
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Tatiana Ilina. Modèles pseudo-diphasiques de transport facilité des colloïdes en milieux faiblement perméables. Autre. Institut National Polytechnique de Lorraine, 2007. Français. ⟨NNT : 2007INPL001N⟩. ⟨tel-01752808⟩



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