A nonlinear random walk approach to concentration-dependent contaminant transport in porous media
Statistical Mechanics
2009-04-17 v2
Abstract
We propose a nonlinear random walk model to describe the dynamics of dense contaminant plumes in porous media. A coupling between concentration and velocity fields is found, so that transport displays non-Fickian features. The qualitative behavior of the pollutant spatial profiles and moments is explored with the help of Monte Carlo simulation, within a Continuous Time Random Walk approach. Model outcomes are then compared with experimental measurements of variable-density contaminant transport in homogeneous and saturated vertical columns.
Keywords
Cite
@article{arxiv.0812.1436,
title = {A nonlinear random walk approach to concentration-dependent contaminant transport in porous media},
author = {Andrea Zoia and Christelle Latrille and Alain Cartalade},
journal= {arXiv preprint arXiv:0812.1436},
year = {2009}
}
Comments
8 pages, 9 figures