Abstract
The new model described in part I of this report has been explored numerically in the Telegraphic approximation. It is shown that a well-defined wave front arises in the transport solution and that the classical advective-dispersion equation underestimates the peak value concentration significantly and overestimates the early and late time values. Concentration distributions have been calculated as functions of distance for fixed times and also as functions of time for fixed distance (i.e. breakthrough curves). By a fitting procedure, it is shown that the advective-dispersion solution can be made to approximate the Telegraphic solution if the effective dispersion coefficient increases with distance from the source or with time. This behaviour is consistent with the scale-dependence observed experimentally and predicted by other theoretical procedures.
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