MODFLOW-SURFACT
- Accurate delineation and tracking of water table position, taking into account flow in the unsaturated zone, delayed yield, and vertical flow components
- Complex saturated/unsaturated flow and transport processes
- Robust solvers and revised simulation ability
Overview
MODFLOW-SURFACT Flow is groundwater modeling software used to produce 3D finite-difference groundwater flow and transport models. This 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.
Benefits
- Handles complete desaturation and resaturation of grid cells
- 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
- Capability of modeling unsaturated water or air movement
- Enhanced Newton-Raphson linearization option increases robustness for unconfined and/or unsaturated flow conditions
MODFLOW-SURFACT Flow
- New flow package (BCF4)
- New recharge/seepage** face package (RSF4)
- New Adaptive Time Stepping and Output Control Package (ATO4)
- New Preconditioned Conjugate Gradient Package containing a new PCG matrix solver (PCG4)
- New Newton Raphson linearization package with backtracking (NRB1)
- Simulate complete desaturation and saturation of grid blocks
- Simulate unsaturated flow
- Includes vapor flow
MODFLOW-SURFACT Transport
- Includes fracture well package (FWL4), new flow package (BCF4), recharge/seepage** face package (RSF4)
- Includes new Adaptive Time Stepping and Output Control Package (ATO4)
Includes new Preconditioned Conjugate Gradient Package containing a new PCG matrix solver (PCG4) - Includes new Newton Raphson linearization package with backtracking (NRB1)
- Simulate complete desaturation and saturation of grid blocks
- Simulate unsaturated flow includes fractured flow and dual porosity
- Includes solute transport, multiphase transport, NAPL dissolution and volatilization
- Includes vapor flow
- 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