Posted Fri, 08 Dec 2006 12:08:47 GMT by jiasf

I am using FEFLOW 4.8 to model an one layer free surface fluvial delta ground water system in a closed basin.  I met a confusing situation that the modeled head-bottom difference was minus for every point along some sections while the water in/out balance was maintained. Would you please tell me what’s the possible reason. Thanks.

Posted Fri, 08 Dec 2006 12:20:20 GMT by Boris Lyssenko
Heads can be below the model bottom if in Specific Options settings 'Falling dry at bottom' is set to 'unconstrained'. FEFLOW uses a minimum transmissivity to calculate flow in these areas then.

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