Peclet number dependent superdiffusive hydrodynamic dispersion in a site percolation porous media measured by NMR

Abstract

The displacement time dependent hydrodynamic dispersion in a model 2D site percolation structure is measured using PGSE NMR. The data indicate superdiffusive scaling of the mean squared displacement at high Peclet numbers, where advective transport dominates, consistent with classic percolation scaling concepts. The time scaling of the mean squared displacement is shown to vary with the Peclet number demonstrating a dependence on the changing dynamics.

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Citation

Seymour, Joseph D., Sarah L. Codd, and Rainer Kimmich. “Peclet Number Dependent Superdiffusive Hydrodynamic Dispersion in a Site Percolation Porous Media Measured by NMR.” Microporous and Mesoporous Materials (April 2017). doi:10.1016/j.micromeso.2017.04.057.
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