Summary
The steepest descent method is used to ascertain the large-time behavior of solute concentrations in homogeneous porous media as determined by advection, diffusion and adsorption-desorption processes; it is found that linear non-equilibrium processes do not, asymptotically, affect the characteristic dispersion length of the transport medium.
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Homentcovschi, D., Ghergut, I., Marinoschi, G. et al. Asymptotic solutions for two-site non-equilibrium transport. Acta Mechanica 129, 127–132 (1998). https://doi.org/10.1007/BF01379655
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DOI: https://doi.org/10.1007/BF01379655