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Michal

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Everything posted by Michal

  1. Hello Jonas, from my humble opinion it looks like PEST is doing its job well. It decreases Phi to 63.5% and finish optimisation after one iteration since NOPTMAX is set to 1.Which is probably correct if you try to do NSMC analysis. The reason it does not load solution into GMS may be a GMS glitch. What I think is happening, when PEST is run using svd-assisted inversion it does not carry the final model run using the best parameter values. As is described in the manual to PEST, it is encouraged for the user to do it him/herself using the PARREP utility and setting NOPTMAX to 0 in the PEST control file. So I am guesing that GMS does not do this for you. It would be best if someone from the GMS devs looked into it. Kind Regards Michal
  2. Helo, it is hard to say without seeing the model. Could you be more specific in what do you mean by "nothing happens"? Do you mean like, the tracer concentration is zero everywhere through the simulation? First look at the mt3dms list file (case.out) and make sure, that the simulation ended without any errors. Then I would suggest to look at Output control in the basic transport package and make sure it is set properly, so MT3d is writing the concentration binary arrays at correct times. Also try to look at the model cell containing the injection well via sources/sinks dialog and check, that there is associated concentration with it.
  3. Michal

    Dry cells

    There should be no obstacles in inactivating inner area of a single layer model using IBOUND. See the attached image.
  4. Is each head observation in the *.hob file maped to the unique cell (IJK) and stress period? Athought it shouldn't matter if the observation's coordinates/times are not identical due to the offset variables (TOFFSET, ROF, COF), I can imagine certain confusion if multiple observation are defined for the same cell and stress period when using PEST.
  5. Hi It would be a nice feature to be able to display piezometric water level of a specifed layer(s) in a cross sectional view (row or column view) in adition to the free water table already implemented. I guess it would be suffictient to add one additinal curve to display and an option to specify from which layer the heads should be extracted. Clipping of the contours could remain as it is - using water table if water table is switched On or the second curve if water table is Off. Thx Michal
  6. Hi speedy, it seems you need to enable the MT3DMS SSM package to enable the mixing of fluid coming from the constant conc. BCs. I would try to enable SSM and set ICBUND to -1. It should work then. Hope it helps. Michal
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