INITIAL CONDITIONS

The transport equation represented by MT3D is formulated for transient conditions. Few transport situations result in a steady state condition.

Can you think of a situation that would reach steady state? one answer

Consequently, we must define the initial conditions.

This is a matter of defining the concentration as a function of space at the start of the simulated period.

If non-equilibrium sorption or dual-domain mass transfer is simulated, then initial concentrations need to be defined for the sorbed or immobile phase.