New to Flopy/ModFlow trying to learn how CHD calculates head values #1413
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I am working with Flopy to model groundwater table and head changes over time. My current code employs a CHD package. I am being returned head result arrays that have a stated starting head and ending head. However I am wanting a model that doesn't necessarily have an ending head of specifically zero. I am trying to build a model that moves towards a lower head but I want to see how long it takes to get there. Regardless of how I specify the time steps and lengths, my heads always end at zero. I clearly do not understand how CHD works or if this is the best way to model what I am looking at. Any advice or ideas on how CHD calculates heads over time and arrays or how to approach this problem would be greatly appreciated. |
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I'd personally approach this problem using the GHB (general head boundary) condition package instead of CHD. With GHB you could set the head on the boundary close to the bottom elevation of your model and then set the conductance accordingly. Using this approach it should be relatively easy to set up and simulate drainage from your model. |
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@AH-CSM
I'd personally approach this problem using the GHB (general head boundary) condition package instead of CHD. With GHB you could set the head on the boundary close to the bottom elevation of your model and then set the conductance accordingly. Using this approach it should be relatively easy to set up and simulate drainage from your model.