Waterloo - Version Modflow-Surfact - Advanced Groundwater Flow and Transport Modeling Software
MODFLOW-SURFACT is one of the most comprehensive flow and transport models available. Built around the MODFLOW code, MODFLOW-SURFACT includes advanced computational modules that are based on robust, efficient, mass-conserving algorithms making it faster and more accurate than its transport modeling counterparts.
Overview
MODFLOW-SURFACT Flow and Transport groundwater simulation software features many robust methods and enhanced simulation capabilities for handling complex saturated/unsaturated subsurface flow and transport processes. Based on the USGS modular groundwater flow model, MODFLOW.
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Handles complete desaturation and resaturation of grid cells
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Accurate delineation and tracking of water table position, taking into account flow in the unsaturated zone, delayed yield, and vertical flow components
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Automatic and correct redistribution of the total flow rate of a well screened through multiple model layers when the upper cell(s) are pumped dry
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Accommodation of wellbore storage and overpumped wells
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Prevents water table buildup beyond a specified recharge-ponding elevation
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Handling of seepage face boundary conditions
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Adaptive time-stepping schemes automatically adjusts time-step size to the non-linearities of the system to optimize the solution stability
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Robust and efficient Pre-conditioned Conjugate Gradient matrix solver
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Capability of modeling unsaturated water or air movement
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Enhanced Newton-Raphson linearization option increases robustness for unconfined and/or unsaturated flow conditions
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The powerful PCG5 solver add-on is up to 20 times faster than the PCG4 solver thanks to its advanced computational techniques
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The Recharge Package (RSF4) has been modified to include zonal input of recharge with zonal recharge values provided via a separate recharge time-series (RTS) file that is independent of the stress-period setup for varying boundary conditions
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The Evapotranspiration (ET) packages EVT and ETS1 (referred to as ET2 in MODFLOW-SURFACT) have been modified to include zonal input of ETmax values provided via a separate ET time-series (ETS) file that is independent of the stress-period setup for varying boundary conditions
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Includes fracture well package (FWL5), new flow package (BCF4), recharge/seepage face package (RSF4)
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Includes new Adaptive Time Stepping and Output Control Package (ATO4)
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Includes new Preconditioned Conjugate Gradient Package containing a new PCG matrix solver (PCG4)
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Includes new Newton Raphson linearization package with backtracking (NRB1)
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Simulate complete desaturation and saturation of grid blocks
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Simulate unsaturated flow includes fractured flow and dual porosity
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Includes solute transport, multiphase transport, NAPL dissolution and volatilization
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Includes vapor flow
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Accurate delineation and tracking of water table position, taking into account flow in the unsaturated zone, delayed yield, and vertical flow components
-
Automatic and correct redistribution of the total flow rate of a well screened through multiple model layers when the upper cell(s) are pumped dry
-
Accommodation of wellbore storage and overpumped wells
-
Prevents water table buildup beyond a specified recharge-ponding elevation
-
Handling of seepage face boundary conditions
-
Adaptive time-stepping schemes automatically adjusts time-step size to the non-linearities of the system to optimize the solution stability
-
Robust and efficient Pre-conditioned Conjugate Gradient matrix solver
MODFLOW-SURFACT Flow and Transport Pricing*
- Flow $2200.00 USD
- Flow and Transport $4400.00 USD
- Density-Dependent Module** $1500.00 USD
- PCG5 Module** $450.00 USD
- Time-varying Material Property (TMP) Module** $900.00 USD
Videos related to this software
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Conceptual Modeling: Define Property Zones Video
This video describes the fifth major step in the conceptual modeling workflow: Defining Property Zones.
A groundwater flow model requires many different types of data to simulate the hydrogeological processes influencing the flow of groundwater. By default, Visual MODFLOW Flex automatically assigns the default property parameter values, specified in the Project Settings (see "Project Settings" for more details) to the entire model domain. Howe -
Conceptual Modeling: Define Boundary Conditions Video
This video describes the sixth step in the conceptual modeling workflow: Defining Boundary Conditions.
Defining boundary conditions is a very important step in the numerical modeling process, since this is how you can incorporate real world hydrogeologic features into your model. In the conceptual modeling workflow supported by Visual MODFLOW Flex, all boundary conditions are assigned using existing data objects. Use shapefiles (polyline/polyg -
Conceptual Modeling: Define Finite Difference Grids Video
This video describes the seventh step in the conceptual modeling workflow: Defining Finite Difference Grids.
The final step before converting your conceptual model to a traditional numerical model is to generate a grid which will be merged with the existing property zones and boundary conditions. Most versions of MODFLOW (including MODFLOW-2000, MODFLOW-2005, MODFLOW-LGR, etc.) require finite difference grids, which are rectilinear, to operate -
Conceptual Modeling: Define Unstructured VGrids and Finite Element Meshes Video
This video describes the seventh step in the conceptual modeling workflow: Defining Unstructured V-Grids and Finite Element Meshes.
The final step before converting your conceptual model to a traditional numerical model is to generate a grid which will be merged with the existing property zones and boundary conditions. This video describes the process for generating unstructured Voronoi grids (v-grids) which can be used in MODFLOW-USG models. -
Conceptual Modeling: Convert to Numerical Model Video
This video describes the final step in the conceptual modeling workflow: converting the conceptual model to a regular numerical model.
Once the conceptual model has been fully defined and a model grid has been generated, you will be able to convert your conceptual model to a traditional numerical model. The model conversion entails merging the defined conceptual model elements with available grids or meshes. Property values and boundary condi
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