Author(s)

S. Chevalier & D. Bernard

Abstract

2D and 3D finite element approach to natural convection in complex porous structures and to the related stability problems S. Chevalier & D. Bernard Arts et Metiers, 33405 Talence Cedex, France ABSTRACT This work describes development of numerical models based on finite element method for the study of free convection and of flows stability in geological porous structures. Some results are presented for a reference configuration: the sloped porous layer bounded by impervious domains. INTRODUCTION By reason of its weak conditions of appearance the phenomenon of natural convection in porous media are exceptionally missing in geological structures. Furthermore this motion have tangible effects in geothermal areas, on the diffusion of pollutants in underground or on the mineral diagenesis process. So by now many fundamental researches have been undertaken in order to clarify this mechanism. A quantitatively approach enjoins to take into account the complexity of geological

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