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Found 6 results

  1. Hi, I'm working with a 3D mesh for a FEMWATER simulation and I would like to evaluate the effect to insert an hydraulic barrier in the model. I have a list of (say) 6 materials, but the mesh uses only 5 real materials. If I try to change the material of an element and I want to convert in the one not yet used in the mesh (the barrier), the GMS crashes. Is there the possibility to workaround the inconvenience? Thank you
  2. Hello Everybody! I need some help, because I have to decide where to spend very well my money!! I want to know if the package FEMWATER would allows me to simulate finite elements: in areas with complicated geological conditions; in a coastal aquifers dealing also with transport of contaminants and MAINLY WITHOUT HAVING TO WORRY FOR A WATER TABLE NEAR THE SURFACE GOING DOWN BELOW THE 1ST LAYER , Do you suggest me to use FEMWATER, it is capable to do all this things as well as to simulate transport of contaminants? I REALLY LIKE THE CAPACITIES OF GMS FOR CONCEPTUALIZATION OF GROUNDWATER ISSUES, IT HAS BEEN VERY USEFUL THROUGHOUT MY ACADEMICAL CAREER, but now i need to work on a project where the geological conditions requires a detail in the upper layers, with pinch out towards the sea, near to a coastal area, with intercalations of clays and sand above a huge volcanic Unit. is there any limit of nodes or elements? have any of you used FEMWATER before for problems of contamination and sea water intrusion? thanks a lot IN ADVANCE FOR ALL YOUR SINCERE SUGGESTIONS, !!! fredy
  3. Hello to all, i have an issue with a TRANSIENT model that runs WITHOUT PROBLEMS IN MODFLOW for a problem of for years pumping and injecting water within a site. I am now using a STEADY FEMWATER model to simulate a complex stratigraphy present on the unsaturated aquifers that could influence some contamination present in the site due to the presence of clay lenses. The model is well defined the whole conceptual model followed according to the femwater tutorials, the only change is that I am defining the layers top and bottom from solids obtained from stratigraphic data, defining specific clay lenses top/bottom scattered within the site. WHEN I run the check femwater there are no errors, only some warnings regarding the fact that I have some injection wells with positive flow-rate and some areas with recharge equal to zero, the femwater start and then I got the message that I have to change the MAXNPK to 14842, I HAVE NO IDEA WHERE I CAN CHANGE THOSE SETTINGS, seems to be that this is the only issue avoiding my model to run ( i hope so!), does anybody could give a hint to fix this problem? . besides i would also accept other suggestions when using injection and pumping wells within a transient model (not this one but the one i want to set up after this steady-state converges) i REALLY would appreciate your help IN ADVANCE THANKS A LOT ALEXXANDER
  4. Please let me know if GMS FEMWATER supports transport modeling of decay. The interface provides for entry of a decay constant - but my build runs with a non-numeric value entered and no difference in simulation results if a numeric value is specified.
  5. Dear all I am new with GMS. and have trouble modeling multiple pumping well to see the total drawdown. I have three layer of clay, silt and sand. I wanna see how much water I should pump and from which layer to get certain drawdown. so I worked backward. giving discharge I checked the result drawdown. I am interested to use wellpoint system in the silt layer (instead of deep well in sand layer) now the question is, why in modflow I can assign any discharge to the well? I expected MODFLOW to give error saying because of low pearmiability this much discharge is not possible to be taken from clay/silt. but that's not the case. any discharge I put in, the modele solve the problem and give me drawdown for it! I used FEMWATER as well, for the same question, and it also solve for any discharge I define!!! That looks wiered to me this can't recognize the layer can't provid a lot water?!! any help is highly appreciated, Zara
  6. Hi All, I have a project that we are going to construct a regional model for a bedrock system to evaluate dewatering and groundwater/surface water (ponds, rivers, streams) interaction. I am interested in knowing the capabilities and limitations of FEMWATER for this type of model and if the output from GMS is similar with FEMWATER as it is with MODFLOW. The other model we are looking at is Feflow. If anyone can provide a comparison (limitations/benefits) of the two models that would be great. Thanks in advance: Greg
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