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TOUGHREACT and MODFLOW grid

Is TOUGHREACT AND MODFLOW grids interchangeable? Let's say I have a 3D MODFLOW grid for a project and now I want to use the same grid, potential same flow solution and transfer it to TOUGHREACT to build a reactive transport model for the project. 

Is this something doable with no or minimal intervention or these grids are using completely different formats?  

4 replies

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    • kenny
    • 1 mth ago
    • Reported - view

    I have not used MODFLOW for a long time. Does it still use the finite difference regular mesh?  For regular mesh, you can easily reproduce the same grids using MeshMaker provided with TOUGH/TOUGHREACT. 

    • TOUGHREACT Developer
    • Eric_Sonnenthal
    • 1 mth ago
    • Reported - view

    I don't know what the MODFLOW format is, but since it is finite difference it will not be anything like a TOUGH MESH which is integral finite difference and uses a local coordinate system. A finite difference grid does not have connections, interface areas or grid block volumes.  Writing a program using whatever language (or even an excel spreadsheet if you don't program) is the most straightforward way to read in the X,Y,Z coordinates and create the MESH file. It's mostly simple geometry (volumes, distances, areas), and then making the format correct. The flow field will have to be redone using the boundary conditions from the modflow simulation.

    • Merson
    • 1 mth ago
    • Reported - view

    Hi, Ben

    I known other researchers did similar operation in modflow. Modflow can directly export specific format which can be recongized by toughreact. You would search the modflow manual again. Maybe you will know how to achieve that.

      • Merson
      • 1 mth ago
      • Reported - view

       And you can also use other mesh software to transform mesh types.

Content aside

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