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- Title
Multiple Retention Mechanisms During Transport in Porous Media: Numerical Modeling and Empirical Parameter's Evaluation.
- Authors
de Oliveira Rios Filho, Jocenrique Carlo; dos Santos, Adriano; de Lima, Sidarta Araujo
- Abstract
Understanding transport and retention mechanisms in porous media is essential in environmental and industrial processes such as subsurface contamination, water filtration and polymer flooding in oil reservoirs. In this article, new averaged equations for colloid transport and retention in porous media are obtained based on the master equation. In addition, new boundary conditions are discussed and an accurate and robust numerical scheme to evaluate the model empirical parameters is proposed. The numerical scheme, which allows incorporating generalized isotherms and retention kinetics, is validated by comparing the obtained solutions with analytical expressions available in the literature. In addition, good agreement between proposed model and the studied experimental data was observed and allowed concluding that the influence of longitudinal hydrodynamic dispersion on retained concentrations can be neglected for large times ( T > 1 p v i ). Finally, it was shown that transport and retention coefficients (including dispersion coefficient) can be simultaneously obtained by numerically solving the inverse problem for any effluent concentration data, suggesting that tracer injection experiments are not necessary in order to quantify the hydrodynamic dispersion coefficient.
- Subjects
POROUS materials; PROBLEM solving; TRANSPORT equation; MANUFACTURING processes; FINITE volume method
- Publication
Transport in Porous Media, 2021, Vol 140, Issue 3, p789
- ISSN
0169-3913
- Publication type
Article
- DOI
10.1007/s11242-021-01604-3