What is MODFLOW-SURFACT?
MODFLOW-SURFACT is one of the most comprehensive flow and transport models available. Built around MODFLOW code, MODFLOW-SURFACT includes advanced computational modules based on robust, efficient and mass conservation algorithms, making it faster and more accurate than its transport modeling equivalents.
Advanced groundwater flow and transport modeling software based on MODFLOW
MODFLOW-SURFACT Flow and Transport groundwater simulation software features many robust methods and enhanced simulation capabilities to handle complex transport processes and saturated/unsaturated underground flow. Based on usgs modular groundwater flow model, MODFLOW.
Benefits of MODFLOW-SURFACT
- Handles complete denaturation and grid cell restoration
- Precise design and tracking of the groundwater position, taking into account the flow in the unsaturated zone, delayed yield and vertical flow components
- Automatic and correct redistribution of the total flow of a well tracked through multiple model layers when the upper cells are pumped dry
- Well storage housing and pumped wells
- Prevents watertable build-up beyond a specified elevation
- Treatment of infiltration face contour conditions
- Adaptive scaling schemes automatically adjust the size of time escalation to system nonlinearities to optimize solution stability
- Robust and efficient preconditioned conjugated gradient matrix solver
- Ability to model unsaturated movements of water or air
- The enhanced Newton-Raphson linearization option increases robustness for unconsated and/or unsaturated flow conditions
Recent additions
- The powerful PCG5 solver add-on is up to 20 times faster than the PCG4 solver, thanks to its advanced computing techniques
- The reload package (RSF4) has been modified to include the zonal reload entry with zonal recharge values provided through a separate reload time series (RTS) file that is independent of the stress period setting for different boundary conditions
- Evapotranspiration (ET) evt and ETS1 packages (referred to as ET2 in MODFLOW-SURFACT) have been modified to include zonal entry of ETmax values provided by a separate ET time series (ETS) file regardless of stress period configuration for different boundary conditions
Flow and Transport MODFLOW-SURFACT
- Includes fracture well package (FWL5), new flow package (BCF4), refill package/ infiltration face (RSF4)
- Includes new adaptive step control and time output package (ATO4)
- Includes the new preconditioned conjugated gradient package that contains a new PCG matrix solver (PCG4)
- Includes new Newton Raphson linearization package with return (NRB1)
- Simulate complete desaturation and saturation of grid blocks
- Simulating unsaturated flow includes fractured flow and double porosity
- Includes solute transport, multiphase transport, napl dissolution and volatilization
- Includes steam flow
- Precise design and tracking of the groundwater position, taking into account the flow in the unsaturated zone, delayed yield and vertical flow components
- Automatic and correct redistribution of the total flow of a well tracked through multiple model layers when the upper cells are pumped dry
- Well storage housing and pumped wells
- Prevents watertable build-up beyond a specified elevation
- Treatment of infiltration face contour conditions
- Adaptive scaling schemes automatically adjust the size of time escalation to system nonlinearities to optimize solution stability
- Robust and efficient preconditioned conjugated gradient matrix solver
System Requirements
UnSat Suite requires the following minimum system configuration:
PC Pentium
32 Mb of RAM
25 MB of free disk space
Visor e mouse VGA
Windows 2000 / XP
