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Unformatted text preview: equations treated with upstream weighting schemes.
Web site: http://water.usgs.gov/nrp/gwsoftware/sutra.html A.8 - SWI package for MODFLOW Authors:
M. Bakker and F. Schaars
Code status: Publicly available
Description: The SWI (Salt Water Intrusion) package of MODFLOW is based on the DupuitBoussinesq approximation in each layer of a stratified aquifer (Strack 1995). Each aquifer can be
modelled with a single layer of cells through vertical averaging of horizontal velocities within
each layer. Communications are possible through leaky layers. The effect of viscosity is
neglected (as in most other vertically integrated models). The SWI package is intended to model 130 seawater intrusion on a regional scale. Water density are considered to vary either uniformly or
linearly within in each layer. That is, in the case of horizontal layers, the vertical density profiles
are either linear or else constant within each layer. A single input file is needed to obtained the
required modifications of MODFLOW to treat the flow problem with variable density flow
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This document was uploaded on 01/19/2014.
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