time variable pressure head with atmospheric BC

[chaim]

Dear Hydrus community,
I have a 2D model to simulation water infiltration from top surface with +ve pressure head (5cm) in the beginning for a short period of time and then switch to atmospheric BC for the rest of time. I followed the manual to set up the time-variable pressure head input table (see pic below). But the simulation result showed a constant 0 pressure head after the initial +ve pressure head for the rest of time, instead of decreasing pressure head (-ve) due to infiltration and transpiration. Does anyone have similar problem and can offer your solution please? Thanks.

[Jirka]

I do not see any negative values in your “VarH1” column, as this BC options requires for swithing the type of BC from variable head to atmospheric BC. J.

[chaim]

Thanks for your reply and suggestion.
I will try to modify the table. Thanks.