![]() You can refine the model layers, by diving the structural zones into proportionately thick layers.Ĭross sectional view of deformed grid from Visual MODFLOW FlexĪ Minimum Cell Thickness must be specified as MODFLOW does not permit lateral discontinuity of layers, i.e., a layer cannot have a thickness of 0 at any point in the layer. ![]() In a deformed grid, the tops and bottoms of the model layers conform to the horizons elevation. Each grid type is described in the following sections. There are three different grid types: Deformed, Uniform and Deformed-Uniform. The first step in defining the vertical grid is selecting the Grid Type. You can also specify the Cell Height and Cell width and the Rows and Columns (and potentially the extents) will be updated accordingly.Ĭlick the button to proceed to define the vertical discretization. The Columns and Rows fields allow you to define the Grid Size. The Xmax and Ymax values refer to the X-Y coordinates of the top-right corner of the numerical grid. The Xmin and Ymin values refer to the X-Y coordinates of the bottom-left corner of the numerical grid. The grid can be rotated counter-clockwise about the grid origin by entering a value between 0 and 360 in the Rotation text field. This name will appear in the Model Explorer tree once the grid is created. However, you can customize the grid to your liking, by modifying the settings in the horizontal grid dialog (shown below).Įnter a unique Name for the numerical grid. Specify the horizontal grid resolution and the vertical layering type and resolutionĬonvert the conceptual model to a MODFLOW modelįrom the "Select Grid Type" step in the Conceptual Model workflow, click on the "Define Finite Difference Grid button":īy default, Visual MODFLOW Flex discretizes the horizontal grid using 20 rows and 20 columns, with no rotation.
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