RT Journal Article ID 537af1df7c868765 A1 Vidal Vargas, J. A. A1 Trevisan, O. V. T1 DETERMINATION OF CONVECTION-DISPERSION- MASS TRANSFER PARAMETERS IN POROUS MEDIA FLOWS USING COMPUTED TOMOGRAPHY JF Journal of Porous Media JO JPM YR 2017 FD 2017-02-20 VO 20 IS 1 SP 67 OP 84 K1 dispersion coefficient K1 X-ray images K1 simulated annealing K1 carbonate rock K1 mass transfer coefficient AB This paper focuses on the development and evaluation of a mathematical model for 1D miscible displacement across intrinsically heterogeneous porous media. The model, referred to as the total concentration model, is developed based on the convection-dispersion equation considering the interaction between the rock and the fluids. The model is suitable for treating the data obtained from CT scanners where the dopant deposits at the rock surface. Further, this paper presents a methodology to treat and use the vast amount of data rendered by CT scanners. The methodology involves a multiparametric fitting of the model to the lab data through the simulated annealing metaheuristic. As an application, conducted displacement tests are reported for two brines on a carbonate rock. Results show a very good fitting of the model to the experimental data. The procedure allowed determination of the dispersion coefficient, the mass transfer coefficient, the effective porosity of the porous medium, which differs from the medium porosity, and the amount of solute that is deposited on or removed from the porous medium. PB Begell House LK https://www.dl.begellhouse.com/journals/49dcde6d4c0809db,68c77da34cb61623,537af1df7c868765.html