GMS:MNW2 Package

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 This contains information about functionality available at GMS version 8.3.
The content may not apply to other versions.
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MODFLOW
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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 Multi-Node Well (MNW2) package is an updated revision MNW package meant to replace the MNW1 Package. It includes modifications to better model partially penetrating wells, non-vertical wells, and includes the ability to specify a pump performance curve. The MNW package was developed to more accurately model wells spanning multiple aquifers or in a single heterogeneous aquifer, partially penetrating wells, and horizontal wells that can be affected by the effects of dynamic changes in the distribution of pumping or intraborehole flow that can significantly alter groundwater flow. A MODFLOW model can not use both the MNW1 and MNW2 packages, it must use one or the other.

MNW2 boundary conditions can be directly added via the Multi-Node well (MNW2) package dialog. Boundary conditions can also be added to selected cells using the Point Sources/Sinks command in the MODFLOW menu. For a conceptual model MNW2 points can be defined in the map module.

Illustration of MNW2 package[1]


Notes

  1. ^ Konikow, Leonard F. (2009), Revised multi-node well (MNW2) package for MODFLOW ground-water flow model: U.S. Geological Survey Techniques and Methods 6–A30, Reston, Virginia, http://pubs.usgs.gov/tm/tm6a30/pdf/TM-6A30__hirez.pdf 
v • e
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