Computation of large-scale parameters for dispersion in fissured porous medium using finite-volume method |
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| Authors: | Yannick Caillabet Pierre Fabrie Didier Lasseux Michel Quintard |
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| Institution: | (1) Institut Francais du Pétrole, 1 et 4 Avenue de Bois Préau, 92500 Rueil-Malmaison, France;(2) Université de Bordeaux I, 33405 Talence Cédex, France;(3) Esplanade des Arts et Métiers, L.E.P.T.-ENSAM, 33405 Talence Cédex, France;(4) Institut de Mécanique des Fluides de Toulouse, Allée du Professeur Camille Soula, 31400 Toulouse, France |
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| Abstract: | In this work, we are interested in solute transport in fissured porous media. The medium is considered as a special case of a two-region system, and a two-equation model previously obtained from a volume averaging technique is used to derive large-scale dispersion coefficients. These coefficients are obtained as solutions of a set of closure problems and the main objective of this work is to present an efficient method to solve these closure problems. The method makes use of an unstructured grid and special techniques to take into account the fissure network. Results are compared with other existing methods on simple fissured media. Finally, the technique is applied to a complex structure. |
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| Keywords: | fissured medium joint element large-scale dispersion mass tranfer coefficient porous medium two-equation model |
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