Mass transport subject to time-dependent flow with non-uniform sorption in porous media

Details Mass transport subject to time-dependent flow with non-uniform sorption in porous media Mass transport subject to time-dependent flow with non-uniform sorption in porous media

2009-07-16

arxiv.org/abs/0907.2806v1

Phys. Rev. E 80, 056301 (2009)

Physics

Condensed Matter

Statistical Mechanics

13 pages, 5 figures

Scientific paper

10.1103/PhysRevE.80.056301

We address the description of solutes flow with trapping processes in porous media. Starting from a small-scale model for tracer particles trajectories, we derive the corresponding governing equations for the concentration of the mobile and immobile phases. We show that this formulation is fairly general and can easily take into account non-constant coefficients and in particular space-dependent sorption rates. The transport equations are solved numerically and a comparison with Monte Carlo particle-tracking simulations of spatial contaminant profiles and breakthrough curves is proposed, so to illustrate the obtained results.

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