GMS:DE4 Package: Difference between revisions

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{{MODFLOW Links}}
{{MODFLOW Links}}
The DE4 package or Direct Solver is one of the solvers available for MODFLOW. It requires reading in a DE4 file. The ''MODFLOW DE4 Solver'' package dialog will show the variables in the DE4 file.
The DE4 package or Direct Solver is one of the solvers available for MODFLOW. It requires reading in a DE4 file. The ''MODFLOW DE4 Solver'' package dialog will show the variables in the DE4 file. Variables include:
* Maximum number of iterations
* Maximum number of upper equations
* Maximum number of lower equations
* Maximum bandwidth
* Frequency of change of coefficients in A
* Print flag for convergence information per time step
* Head change multiplier
* Head change closure criterion
* Interval for time step printing


For more information on this solver see page 84 of the USGS documentation at [http://pubs.er.usgs.gov/usgspubs/ofr/ofr200092 http://pubs.er.usgs.gov/usgspubs/ofr/].
For more information on this solver see page 84 of the USGS documentation at [http://pubs.er.usgs.gov/usgspubs/ofr/ofr200092 http://pubs.er.usgs.gov/usgspubs/ofr/].

Revision as of 15:04, 5 July 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

The DE4 package or Direct Solver is one of the solvers available for MODFLOW. It requires reading in a DE4 file. The MODFLOW DE4 Solver package dialog will show the variables in the DE4 file. Variables include:

  • Maximum number of iterations
  • Maximum number of upper equations
  • Maximum number of lower equations
  • Maximum bandwidth
  • Frequency of change of coefficients in A
  • Print flag for convergence information per time step
  • Head change multiplier
  • Head change closure criterion
  • Interval for time step printing

For more information on this solver see page 84 of the USGS documentation at http://pubs.er.usgs.gov/usgspubs/ofr/.

The MODFLOW DE4 Solver package dialog.

DE4 File Format

FOR EACH SIMULATION
 0.  [#Text]
 1.  ITMX   MXUP   MXLOW   MXBW
 2.  IFREQ  MUTD4  ACCL    HCLOSE   IPRD4

Item 0 is optional—“#” must be in column 1. Item 0 can be repeated multiple times.


v • e
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