GMS:MODFLOW-USG: Difference between revisions

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#*CLN Process
#*CLN Process
#*GNC Package
#*GNC Package
#Older versions of GMS cannot read MODFLOW-USG files written by any non-GMS software. This is because there was no standard way to define the unstructured grid geometry. GMS writes a *.VTU ([http://www.vtk.org/VTK/img/file-formats.pdf Visualization Toolkit] Unstructured Grid) file with the MODFLOW files to define the grid geometry. In GMS 10.1 and later versions a model that was created outside of GMS can be imported as long as there is either a *.VTU file or a *.GSF file present to define the grid geometry.
#Older versions of GMS cannot read MODFLOW-USG files written by any non-GMS software. This is because there was no standard way to define the unstructured grid geometry. GMS writes a *.VTU ([http://www.vtk.org/VTK/img/file-formats.pdf Visualization Toolkit] Unstructured Grid) file with the MODFLOW files to define the grid geometry. In GMS 10.1 and later versions a model that was created outside of GMS can be imported as long as there is either a *.VTU file or a *.GSF ([http://www.pesthomepage.org/getfiles.php?file=gwutil_c.pdf Grid Specification File]) present to define the grid geometry.


==See also==
==See also==

Revision as of 23:00, 25 April 2016

MODFLOW
Pre-processing
MODFLOW Commands
Building a MODFLOW Model
Map to MODFLOW
Calibration
Packages Supported in GMS
Saving a MODFLOW Simulation
Importing MODFLOW Files
Unsupported MODFLOW Features
Run MODFLOW
Post-processing
MODFLOW Display Options
MODFLOW Post-Processing Viewing Options
Reading a MODFLOW Simulation
Tutorials
Packages
Flow: BCF6, HUF, LPF, UPW
Solvers:

DE4, GMG, NWT, PCG,

PCGN, LMG, SIP, SOR,

SMS
Other:

BAS6, BFH, CHD1, CLN,

DRN1, DRT1, EVT1, ETS1,

GAGE, GHB1, GNC, HFB1,

HUF, LAK3, MNW1, MNW2,

OUT1, RCH1, RIV1, SFR2,

STR1, SUB1, SWI2, WEL1,

UZF1
v • e

Starting at GMS version 10.0, GMS supports MODFLOW-USG. MODFLOW-USG is a version of MODFLOW based on finite volume calculations, thus allowing for many different types of grid cells. This allows the model grid to more accurately match the model domain and be more efficiently refined in areas where more accuracy is desired.

MODFLOW-USG models are built using unstructured grids, or UGrids, which are a new (as of GMS 10.0) type of geometric object that can handle the wide variety of cell types supported by MODFLOW-USG.

The MODFLOW-USG model is included with all paid editions of GMS.

Choosing MODFLOW Version

Only MODFLOW-USG is supported when using unstructured grids. MODLFOW-USG can also be used for a model using a 3D grid. Choosing to use MODFLOW-USG is done in the MODFLOW Global Options dialog. With a 3D grid at any time the user can switch from one MODFLOW version to another.

MODFLOW Global Option dialog

Unsupported Features

Previous to GMS 10.1 there was no support for the following MODFLOW-USG features, though the CLN and GNC packages and the import feature are now supported in current versions of GMS.

  1. Packages/processes
    • CLN Process
    • GNC Package
  2. Older versions of GMS cannot read MODFLOW-USG files written by any non-GMS software. This is because there was no standard way to define the unstructured grid geometry. GMS writes a *.VTU (Visualization Toolkit Unstructured Grid) file with the MODFLOW files to define the grid geometry. In GMS 10.1 and later versions a model that was created outside of GMS can be imported as long as there is either a *.VTU file or a *.GSF (Grid Specification File) present to define the grid geometry.

See also

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