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Comment on “Frequency-dependent dispersion in porous media”

Abstract:

In a recent paper, Valdes-Parada and Alvarez-Ramirez [Phys. Rev. E 84 031201 (2011)] used the technique of volume averaging to derive a frequency-dependent dispersion tensor, D*(w), the goal of which is to describe solute transport in porous media undergoing periodic processes. We describe two issues with this dispersion tensor that become particularly apparent in the time domain. Firstly, we demonstrate that the definition of D*(w), and equivalently of D*(t), is erroneous, and derive its co...

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Publication date:
2011-01-01
URN:
uuid:701cec49-0630-44b0-83df-6977b83a9b49
Local pid:
oai:eprints.maths.ox.ac.uk:1470

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