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Title: EOS7CA Version 1.0: TOUGH2 Module for Gas Migration in Shallow Subsurface Porous Media Systems

EOS7CA is a TOUGH2 module for mixtures of a non-condensible gas (NCG) and air (with or without a gas tracer), an aqueous phase, and water vapor. The user can select the NCG as being CO2, N2, or CH4. EOS7CA uses a cubic equation of state with a multiphase version of Darcy's Law to model flow and transport of gas and aqueous phase mixtures over a range of pressures and temperatures appropriate to shallow subsurface porous media systems. The limitation to shallow systems arises from the use of Henry's Law for gas solubility which is appropriate for low pressures but begins to over-predict solubility starting at pressures greater than approximately 1 MPa (10 bar). The components modeled in EOS7CA are water, brine, NCG, gas tracer, air, and optional heat.
Publication Date:
OSTI Identifier:
Report Number(s):
R&D Project: CE0300000; 2015-102
DOE Contract Number:
Resource Type:
Software Revision:
Software Package Number:
Software Package Contents:
Media Directory; Software Abstract; Media includes Source Code; User Guide; Executable Module(s); Compilation Instructions; Linking Instructions; Sample Problem Input Data; Sample Problem Output Data; Installation Instructions; / 1 CD-ROM
Software CPU:
Open Source:
Source Code Available:
Other Software Info:
This module models flow and transport of non-condensible gases (e.g., CO2, CH4, N2) and air in shallow subsurface and vadose zone systems.
Related Software:
TOUGH2 Version 2
Research Org:
Lawrence Berkeley National Laboratory
Sponsoring Org:
Country of Publication:
United States

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