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NAPL Simulator
Version 1.0 - October 1997
Description
Downloads
Technical Support		 Center For Subsurface Modeling Support

Description  Back to Top

NAPL Simulator conducts a simulation of the contamination of soils and aquifers which results from the release of organic liquids commonly referred to as Non-Aqueous Phase Liquids (NAPLS)

The simulator is applicable to three interrelated zones: a vadose zone which is in contact with the atmosphere, a capillary zone, and a water-table aquifer zone. Three mobile phases are accommodated: water, NAPL, and gas. The 3-phase k-S-P sub-model accommodates capillary and fluid entrapment hysteresis. NAPL dissolution and volatilization are accounted for through rate-limited mass transfer sub-models.

The numerical solution is based on a Hermite collocation finite element discretization. The simulator provides an accurate solution of a coupled set of non-linear partial differential equations that are generated by combining fundamental balance equations with constitutive thermodynamic relationships.

Downloads  Back to Top

Getting Started:

You will need unzipping (compression) software to uncompress ZIP files. If you need to load unzipping software on your computer, free software is available for download on the internet at the following sites:

Leaving EPA -> http://www.pkunzip.com -  PKUNZIP home page
Leaving EPA -> http://www.info-zip.org/ - InfoZip Wiz

Files available for download:

Eleven files are available for download.  The model is available in both 2D and 3D.  Both DOS and UNIX file formats are available.

Please carefully review the User's Manual (PDF) (228 pp, 1.5MB, About PDF) prior to installing or running the program.

2D Files:

3D Files:

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