Commentaire à la note intitulée Datation par la méthode U/Th d'un travertin quaternaire du Sud-Est marocain : implications paléoclimatiques pendant le Pléistocène moyen et supérieur de L. Boudad et al. [C. R. Geoscience 335 (2003) 469–478]     

Brahim Akdim  Ramón Julia 《Comptes Rendus Geoscience》2006,338(8):581-582

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Modeling compositional compressible two-phase flow in porous media by the concept of the global pressure     

Brahim Amaziane  Mladen Jurak  Ana Žgaljić Keko 《Computational Geosciences》2014,18(3-4):297-309

We derive a new formulation for the compositional compressible two-phase flow in porous media. We consider a liquid–gas system with two components: water and hydrogen. The formulation considers gravity, capillary effects, and diffusivity of each component. The main feature of this formulation is the introduction of the global pressure variable that partially decouples the system equations. To formulate the final system, and in order to avoid primary unknowns changing between one-phase and two-phase zones, a second persistent variable is introduced: the total hydrogen mass density. The derived system is written in terms of the global pressure and the total hydrogen mass density. The system is capable of modeling the flows in both one and two-phase zones with no changes of the primary unknowns. The mathematical structure is well defined: the system consists of two nonlinear parabolic equations, the global pressure equation, and the total hydrogen mass density equation. The derived formulation is fully equivalent to the original one. Numerical simulations show ability of this new formulation to model efficiently the phase appearance and disappearance.  相似文献   

Hydrogeological and mixing process of waters in deep aquifers in arid regions: south east Tunisia   总被引：1，自引：0，他引：1  

Jalila Makni  Fatma Ben Brahim  Saoussan Hassine  Salem Bouri  Hamed Ben Dhia 《Arabian Journal of Geosciences》2014,7(2):799-809

This study addresses the hydrogeochemistry of thermal and cold waters from south east Tunisia. Temperature intervals are 38.5–68 °C and 22–27.8 °C for thermal water and cold water, respectively. Three distinct hydrogeological systems supply water either for irrigation or for drinking; they are: (1) the Continental Intercalaire geothermal aquifer (CI), (2) the Turonian aquifer and (3) the Senonian aquifer. A synthetic study including hydrochemical, hydrogeological and geothermal approaches have been applied in order to evaluate the inter-aquifers water transfer in south east of Tunisia. By using silica geothermometers and saturation indices for different solid phases, estimated thermal reservoir temperature varies between 52 and 87 °C and between 75 and 110 °C, respectively. Based on chemical and thermal data, mixing, which occurs between the ascending deep geothermal water and shallow cold water, is about 57 % cold water.  相似文献