GMS:MODFLOW-2005: Difference between revisions

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

Revision as of 15:25, 1 July 2016

Starting at GMS version 8.0, GMS supports MODFLOW 2005.

Choosing to use MODFLOW-2000 or MODFLOW-2005 is done in the MODFLOW Global Options dialog. Switch from one to the other at any time.

MODFLOW Global Option dialog

The following list shows changes in MODFLOW-2005 from MODFLOW-2000.

1. SOR1 Solver

2. PCG2 Solver

MODFLOW-2005 replaces the DAMP variable with DAMPPCG and DAMPPCGT variables [1]. These two new variables allow different damping factors to be applied separately to steady-state and transient stress periods.

3. UZF Package

4. LPF package

MODFLOW-2005 provides more options for the LPF Package. Pictures below show the LPF package options supported in MODFLOW-2000 vs MODFLOW-2005.

MODFLOW 2000 LPF Package Options

MODFLOW 2005 LPF Package Options

5. PES and PEST

PES is not available in MODFLOW 2005. Automated calibration in GMS is handled using PEST.

Here are tables of some of the available Input and Output files for MODFLOW 2005.

**Required Input Files**
Name	Description
MFN	MODFLOW Name File
GLO	Global Listing File
DIS	Discretization File
OC	Process Output Control Option File
BA6	Basic Package Global Options File

**Solver Package File**
Name	Description
DE4	Direct
GMG	Geometric Multi-Grid
NWT	Newton
PCG	Preconditioned Conjugate-Gradient
SIP	Strongly Implicit Procedure
SMS	Sparse Matrix Solver
SOR	Slice-Successive Overrelaxation

**Input Flow Package Files**
Name	Description
BCF	Evapotranspiration Segments
HUF	Evapotranspiration
LPF	Layer Property Flow
UPW	Unsaturated-Zone Flow

**Optional Package Files**
Name	Description
ASP	PEST Advanced Spacial Parameterization
BFH	Boundary Flow and Head
CHD	Time-Variant Specified-Head
CLN	Connected Linear Network
DRN	Drain
DRT	Drain Return
EVT	Evapotranspiration
ETS	Evapotranspiration Segments
GAG	Gage
GHB	General Head Boundary
GNC	Ghost Node Correction
HFB	Horizontal Flow Barrier
LAK	Lake
RCH	Recharge
RIV	River
SFR	Streamflow-Routing
STR	Stream-Routing
SUB	Subsidence
SWI	Seawater Intrusion
UZF	Unsaturated-Zone Flow
WEL	Process Well

**Observation Input Files**
Name	Description
OBS	Main Observation Process Input
DROB	Drain Observation
CHOB	Constant-Head Flow Observation Input

**Output Files**
Name	Description
MFS	MODFLOW Super File
MFW	GMS MODFLOW World File
MFR	GMS MODFLOW Result Index File
PRJ	Projection
CSV	Cell Summary Comma Separated Value Excel
HFF	Head and Flow File Link to MT3DMS
H5	Hierarchal Data Format (HDF5) Array & List Data
M2P	MODFLOW Pest
PARAM	Parameter Information

**Output Results Files**
Name	Description
CCF	Cell-to-Cell Aquifer Flow
CCF2	Cell-to-Cell Stream Reach Outflow
DRW	Drawdown
GLO	Global Listing
HED	Head Output
OUT	Output

**Output Package Files**
Name	Description
MNW	Multi-Node Well
MNW2	Multi-Node Well Version 2
MNWI	Multi-Node Well Information
SWIBUD	Seawater Intrusion Package Budget
SWIZETA	Sewater Intrusion Package Zeta Surface

**Output Data Exchange Files**
Name	Description
_W	Weighted Residuals
_WW	Weighted Equivalents & Weighted Observation
_WS	Weighted Residuals and Simulated Equivalents
_R	Unweighted Residuals
_OS	Observed Values and Simulated Equivalents
_B	Data Exchange File
_NM	Weighted Residuals and Probability Plotting

@@ Line 7: / Line 7: @@
 == Choosing MODFLOW-2000 or MODFLOW-2005 ==
 {{only in print|[[Image:Switching_MF2K5.jpg|200px|none|thumb|left|MODFLOW Global Option Dialog]]}}
-Choosing to use MODFLOW-2000 or MODFLOW-2005 is done in the [[GMS:Global_Options/Basic_Package|''MODFLOW Global Options'' dialog]]. At any time, switch from one to the other.
+Choosing to use MODFLOW-2000 or MODFLOW-2005 is done in the [[GMS:Global_Options/Basic_Package|''MODFLOW Global Options'' dialog]]. Switch from one to the other at any time.
 {{hide in print|[[Image:Switching_MF2K5.jpg|300px|none|thumb|left|''MODFLOW Global Option'' dialog]]}}

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