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NAPL Simulator

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Description

NAPL Simulator conducts a simulation of the contamination of soils and aquifers that results from the release of organic liquids commonly referred to as nonaqueous-phase liquids (NAPLS). The simulator is applicable to three interrelated zones: a vadose zone that 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 three-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.

This model is available in both two-dimensional and three-dimensional version.

Specifications

Version 2.0
Release Date November 2010
Development Status general release
Development Information  
Operating System DOS
Development Language  
Intended Audience  
Key Words  
Related Web Sites  

Downloads

Unzipping SoftwareExit EPA disclaimer

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US EPA. (1997) "NAPL: Simulator Documentation." Publication NO. EPA/600/R-97/102. | Revisions (ZIP) (10.8 MB)

1D Files

1-D DOS tutorial (ZIP) (884 KB)

2D Files

2-D DOS source code (ZIP) (340 KB)

2-D DOS example files 1 (ZIP) (216 KB)

2-D DOS example files 2 (ZIP) (236 KB)

2-D DOS example files 3 (ZIP) (220 KB)

2-D DOS example files 4 (ZIP) (264 KB)

2-D DOS example files 5 (ZIP) (284 KB)

2-D DOS example files 6 (ZIP) (440 KB)

2-D DOS example files 7 (ZIP) (292 KB)

3D Files

3-D DOS source code (ZIP) (376 KB)

3-D DOS example files (ZIP) (300 KB)

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