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Cauchy/Type III Boundary Condition

Hello,

Is it possible to apply a head dependent boundary condition, where flux is a function of head difference between a cell and some prescribed value? I tried using the productivity index to do this, but I'm not confident in the result since this method is intended for wells, not (necessarily) boundaries. 

Thank you,

Amy

3 replies

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    • amykrice
    • 8 yrs ago
    • Reported - view

    Does anyone have an answer for this? It's important for my research. Would it help if I gave more information?

    Thank you,

    Amy

    • Finsterle GeoConsulting
    • Stefan_Finsterle
    • 8 yrs ago
    • Reported - view

    Amy,

    Try to represent the actual geometrical and physical conditions that lead to the Cauchy boundary.

    Depending on your application, you may want to add a thin extra element between the model domain and the Dirichlet boundary element, and assign it an appropriate "conductance" (typically a relatively small permeability).

    Could this work?

    Stefan

    • amykrice
    • 8 yrs ago
    • Reported - view

    Stefan,

    I tried a few variations on this suggestion and found one that will work. Thank you for the help!

    Amy

Content aside

  • 8 yrs agoLast active
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