GMS:UPW Package: Difference between revisions
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MODFLOW-NWT contains the UPW (UPstream Weighting) flow package. The UPW flow package is based on the [[GMS:LPF Package|LPF package]] but differs in that the rewetting and vertical conductance correction options are not available. It also differs from the [[GMS:LPF Package|LPF package]] in that it smoothes the horizontal conductance and storage change functions to have a continuous derivatives so they can be solved by the Newton method. Using the UPW package requires using the [[GMS:NWT Package|NWT solver]]. | MODFLOW-NWT contains the UPW (UPstream Weighting) flow package. The UPW flow package is based on the [[GMS:LPF Package|LPF package]] but differs in that the rewetting and vertical conductance correction options are not available. It also differs from the [[GMS:LPF Package|LPF package]] in that it smoothes the horizontal conductance and storage change functions to have a continuous derivatives so they can be solved by the Newton method. Using the UPW package requires using the [[GMS:NWT Package|NWT solver]]. | ||
For more information on the UPW package see the | For more information on the UPW package see the [http://water.usgs.gov/nrp/gwsoftware/modflow2000/MFDOC/upw_upstream_weighting_package.htm USGS documentation.] | ||
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