Error on running simulation

Hello all,

we are working on a 2D-steady-state modell, using Feflow 6, with the new user interface and all patches available.

During calibration, we have encountered the following problem:
after hitting RUN once, the resulting heads and water balance show a solution (no 1),  after hitting RUN again the following resulting heads and water balance show a solution no 2, and so on and on (after 10 times hitting RUN I gave up counting  :-\) without changing anything and working steady-state.  :o

The results don't change much but it's noticeable. Returning to the older interface of the program gives a complete different solution, leaving me in question which solution to use for further working.

Can anybody please explain that phenomenon and has a solution to it???

Thanks for the help!!!!  :)

If the solution is different in every run in steady-state mode, you probably do not really reach convergence. Starting from different initial conditions (= the results of the previous run) the model reaches different solutions. I would recommend to have a detailed look at zones with different results to try to find possible reasons for the instability.

Thanks for the help I'll take a look at those zones!!!!!  :)