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Posted Mon, 18 Feb 2013 05:02:56 GMT by uqjzhang
Say that I need these nodes on fixed head (1st kind) for 1 year and cut them loose after then, How may I define that in ONE model run?

Thanks
Posted Mon, 18 Feb 2013 05:44:25 GMT by Blair Thornburrow Groundwater Modeller
You cannot totally remove a BC during the model run without an IFM.

Your alternative option is to control BC activity with constraints.  At times when the BC needs to be inactive, both inflow and outflow constraints must be 0.  These constraints can be assigned with time series.
Posted Wed, 20 Feb 2013 00:07:44 GMT by uqjzhang
Thanks Blair, I tried the constraints way, ant it worked! For those who are also interested on this, it is really simple, here is a picture I made for the definition of this trick.

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