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Journal Articles Physical Review E Year : 2009

A nonlinear random walk approach to concentration-dependent contaminant transport in porous media

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Abstract

We propose a random walk model to describe the dynamics of dense contaminant plumes through porous media. A nonlinear 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.
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cea-02349243 , version 1 (20-11-2019)

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  • HAL Id : cea-02349243 , version 1

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Andrea Zoia, Christelle Latrille, Alain Cartalade. A nonlinear random walk approach to concentration-dependent contaminant transport in porous media. Physical Review E , 2009, 79 (4), pp.041125. ⟨cea-02349243⟩

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