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Hi, I have a MODFLOW/SEAWAT with 12 layers. There are pumping wells in the model that runs through multiple layers (the screens go through multiple layers). Please see how I included the well information in the conceptual model. These wells are supposed to be screen through layer 6 through 8 and each pump is supposed to extract 757 m3/day as you can see. I saved the model in the native text format also in the model set up so that I can also run the model in the command prompt. When I look through the .wel file I noticed the pumping rates are assigned in the following way in the grid cells. It looks like each layer at a given pumping location (grid cells with same i and j) are assigned with the pumping rate provided in the conceptual model. If that is the case, each pumping well is pumping three times the rate that was assigned in the conceptual model. When I assigned the pumping rate in the conceptual model, I was imagining that this 757.6 rate will be divided among the three layers. Please let me know if I have assigned the pumping rates correctly in the conceptual model? Thank you, Lalith
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When the "Create Particles at Wells" command is used, GMS could have the starting locations remember the name of the well that they were created around and include that information in the Pathline Report. -
Hi, Is there a way to "flag" particle generated by Modpath to the well they come from? I'm using Modpath to evaluate residence time for 50 wells. I'm using 100 to 300 particle per well. It would be convenient if i could track back from which well the particle are from in the pathline report of GMS. Sylvain
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Dear all, I am modelling a pair of extraction/injection wells and have noticed something very peculiar when varying the horizontal conductivity values of certain layers. I have attached two pics to this post. In my model, the top layer consists of 3 distinct layers which represent an aquitard (clay). Extraction and injection is occurring in the lower 5th layer. In the 2 figures the horizontal k-value for each of the top three layers are displayed. The only difference between the two figures is that the middle layer's conductivity value has been changed from 0.01 to 5 m/d. All layers have a vertical anisotropy of 1. As can be observed in the figures, the one with the higher conductivty value for the middel layer (k = 5 m/d) gives a smaller change in head at the surface. You can see the 0.05 m contour line staying beneath the surface. In the other figure, both the 0.05 and 0.1 contours reach the surface implying a change in head by that amount at the surface. It is logical that when you deal with aquitards less water can pass through this layer, yet in these figures the oppossite is true. Can anyone explain this difference to me? Thank you for any insight
