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작성자 관리자 작성일 25-05-28 10:21 조회수 215
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제목 Visual MODFLOW Flex 11.0 출시 안내

2025년 6월 Visual MODFLOW Flex 11.0 버전 출시 예정!


What’s New in Version 11.0:

  • Extended support for MODFLOW 6 packages
  • Enhanced 3D visualization and data handling
  • Improved model setup, import/export flexibility, and interface performance


​Visual MODFLOW Flex brings together industry-standard codes for groundwater flow and 

contaminant transport, essentia analysis and calitbration tools, and stunning 3D visualization capabilities 

in a single environme. The conceptual model approach, unique to Visual MODFLOW Flex 

in groundwater modeling user interfaces, allows you to:

15a4711815600f2c6249baf718e40e88_1748394315_9371.png• Build a conceptual model of the groundwater system, prior to the simulation- Geologic formation structures 

hydrogeologic properties, and boundary conditions are all designed outside the model grid or mesh; 

this allows the flexibility to adjust your interpretation of the groundwater system before applying 

a discretization method and converting to a numerical model.

• Build the model with minimal data pre-processing required - Working with grid-independent data allows you 

to maximize the use of your existing GIS data and incorporate physical geology 

and geographic conditions before designing a grid or mesh.

• Generate and simulate regional and local-scaled models - With support for unstructured Voronoi 

and Quadtree grids and local grid refinment (LGR), you can design localized/refined grids around areas 

of interest, directly  within the conceptual model environment With the ability to easily extract subgrids, 

calculated heads from a  regional model can also be used as boundary conditions 

for local-scaled models.

• Design the correct models faster - Ihe grid-independent raw data is left intact and is not defined 

by grid cells  or mesh elements when moditying the data and project objective. This allows you to 

generate multiple numerical models from the same conceptual model.

• Make changes to the model data and immediately see results -The conceptual model environment 

provides simultaneous 2D and 3D views which are updated whenever changes to the data are made.



Visual MODFLOW Flex Improvements


Version 11.0 of Visual MODFLOW Flex includes the following improvements:


Model and grid import


15a4711815600f2c6249baf718e40e88_1748394316_0062.pngImporting models has been massively overhauled in Visual MODFLOW Flex 11.0 Model import 

now uses a new, proprietary Python library based on FloPy, significantly improving lexibility and stability 

when importing external models.


• MODFLOW-6 models can now be imported

• SEAWAT models may now be importec

• Model grids in the DIS and DISV formnat can now be imported without importing other model elements

• Flow properties (such as hydraulic conductivity and storage) in LPF, NPF, and UPW formats can now be  imported independent of the model import step

• Flow property package settings can be brought in during import

• Most common boundary conditions (CHD, RlIN, GHB, DRN, RCH, and EVT) can now be imported  independently

• Solver settings (IMS, PCG, GMG, SIP, WHS, SAMG) may now be imported

• Output control settings may now be imported


Working with unstructured grids

15a4711815600f2c6249baf718e40e88_1748394316_1234.png




Unstructured grids can now be imported into Visual MODFLOW Flex and unstructured grids can now be 

created outside of the conceptual modeling workflow.

• Unstructured MODFLOW-6 models using DISV grids may now be imported

• DISV unstructured grids may now be imported independently

• Unstructured grids(Voronoi, quadtree) may now be created directly in the numerical modeling workflow

• 3D unstructured gridded data (such as heads or concentration results) may now be imported 

and initial  concentrations

• 3D unstructured gridded data can be used to set model properties such as initial heads



TIN surfaces

15a4711815600f2c6249baf718e40e88_1748394315_8009.png


Triangular irregular network (TIN) surfaces can now be used with your Visual MODFLOW Flex projects. 

The  following functionalities are now supported:

• Import TINs from point shapefiles (shp\ and from Triangle.node or .ele files

• Generate TINs from existing point data objects, using linear or kriging interpolation schemes

• Generate TINs from model layers

• Use TINs to define model horizons

• Use TINs in the expression builder of other data objects

• Use TINs to define boundary condition parameters and model properties in the numerical


Performance, Usability, and other Enhancements

Visual MODFLOW Flex includes the following improvements for working with your models:


Usability:

• Objects in the data tree can now be reordered by dragging-and-dropping

• Runs can be given an alias, renaming them in the interface

• The coordinate reference systemn (CRS) selector is now searchable


Data operations:

• Attribute data from points and polygons may now be referenced in the expression builder

• Elevation data from points may now be referenced in the expression builder

• Export

    ◦ Recharge and Evapotranspiration boundary conditions as shapefiles

    ◦ Surfaces and TINs as point shapefiles

    ◦ TINs as polygons

    ◦ Water table outputs as shapefile contours or surface


Boundary conditions:

• Inactive transport areas: transport models can include explicit zones for active transport 

and inactive transport (ICBUND for MT3D-MS, RT3D, and SEAWAT and IDOMAIN for MODFLOW-6)

• Recharge and EVT can now be assigned to specified layers:

    ◦ Edit/assign layer in recharge/EVT boundary conditions

    ◦ Support for RCHOP= 2, NEVTOP - 2 options at the translation step for applicable flow engines

    ◦ The expression builder supports the layer|) function which takes an elevation 

(from a surface or a  constant values) and outputs the associated layer number (useful for 

e.g. assigning recharge to outcropping  layers in unstructured grids)

• Specified Flux BCs can now be translated to the mathematically-equivalent WEL package file 

when using MODFLOW-6 (which does not include/ support the specified flux BC)


Other enhancements


• Updated versions of the SAMG solver are now used for the MODFLOW-USG and MODFLOW-6 engines

• When defining model horizons, surfaces that do not cover the entire model area can now be 

extrapolated to the model boundary

• In the PEST workflow, flux observations are now available for the MODFLOW-USG engine 

(consistent with other engines)

• In the conceptual modeling workflow, horizons can now be defined using a constant value, 

instead of always requiring a surface or TIN

• US regional settings for number and date formats are no longer required to 

run Visual MODFLOW Flex (however, these settings are still recommended)

• The CRS library has been expanded


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