Abstract
Contaminant transport is investigated in the generalized Dykhne model differing from the original Dykhne model by the presence of advection in the high-permeability medium. An analysis is presented of transport regimes and concentration tail behavior in the high-permeability medium. It is found that the transport regimes include anomalous ones: subdiffusion and quasi-diffusion. A difference is revealed between longitudinal and transverse transport. Regime change over time leads to multiple-regime long-distance asymptotic behavior of concentration distributions. An analogy is drawn between the problems examined here and transport through comb structures.
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Original Russian Text © O.A. Dvoretskaya, P.S. Kondratenko, L.V. Matveev, 2010, published in Zhurnal Éksperimental’noĭ i Teoreticheskoĭ-Fiziki, 2010, Vol. 137, No. 1, pp.67–76.
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Dvoretskaya, O.A., Kondratenko, P.S. & Matveev, L.V. Anomalous diffusion in generalized Dykhne model. J. Exp. Theor. Phys. 110, 58–66 (2010). https://doi.org/10.1134/S1063776110010085
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DOI: https://doi.org/10.1134/S1063776110010085