GMS:MF6 GNC Package

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MODFLOW 6
Models & Tools
GWF Model
GWT Model
Cell Properties Dialog
Zone File
Packages
Flow: GNC, HFB, NPF
GWF: BUY, CHD, CSUB,
DRN, EVT, GHB,
LAK, MAW, MVR,
OBS, RCH,RIV,
SFR, STO, UZF,
WEL
GWT: ADV, CNC, DSP
FMI, IC, IST, LKT,
MDT, MST, MVT,
MWT, OBS, SFT,
SRC,SSM, UZT
Other DIS, DISU, DISV,
IMS, OC, TDIS

The Ghost Node Correction (GNC) Package dialog

The Ghost Node Connection (GNC) Package dialog is accessed by double-clicking on the GNC package under a MODFLOW 6 simulation in the Project Explorer. It contains the following sections and options:

  • Sections list – A list of sections that can be turned on or off:
    • Comments – Turn on to make the Comments section visible.
    • Options – Turn on to make the Options section visible.
    • GNCData – Turn on to make the GNCData section visible. This section is on by default.
  • Comments section – Enter general alphanumeric comments. Comments entered here get written at the top of the file, preceded by a '#' symbol.
  • Options section – Temporal options and settings:
    • Print input to listing file (PRINT_INPUT) – If turned on, indicates that the list of GNC information will be written to the listing file after it is read.
    • Print flows to listing file (PRINT_FLOWS) – If turned on, indicates that a list of GNC flow rates will be printed to the listing file.
    • Apply ghost node correction explicitly (EXPLICIT) – Indicates that the ghost node correction is applied and the correction terms are added to the right-hand side of the matrix.
  • GNCData – Area where data specific to GNC and the Ghost Nodes can be reviewed.


Note: The GNC Package is currently not fully supported in GMS.

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