Actions for EOSN [electronic resource] : A TOUGH2 module for noble gases

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EOSN [electronic resource] : A TOUGH2 module for noble gases

Published
Washington, D.C. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy, 2003.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators
United States. Department of Energy. Office of Energy Efficiency and Renewable Energy and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
We developed a new fluid property module for TOUGH2, called EOSN, to simulate transport of noble gases in the subsurface. Currently, users may select any of five different noble gases as well as CO2, two at a time. For the three gas components (air and two user-specified noble gases) in EOSN, the Henry's coefficients and the diffusivities in the gas phase are no longer assumed constants, but are temperature dependent. We used the Crovetto et al. (1982) model to estimate Henry's coefficients, and the Reid et al. (1987) correlations to calculate gas phase diffusivities. The new module requires users to provide names of the selected noble gases, which properties are provided internally. There are options for users to specify any (non-zero) molecular weights and half-lives for the gas components. We provide two examples to show applications of TOUGH2IEOSN. While temperature effects are relatively insignificant for one example problem where advection is dominant, they cause almost an order of magnitude difference for the other case where diffusion becomes a dominant process and temperature variations are relatively large. It appears that thermodynamic effects on gas diffusivities and Henry's coefficients can be important for low-permeability porous media and zones with large temperature variations.
Report Numbers
E 1.99:lbnl--52379
lbnl--52379
Other Subject(s)
Note
Published through SciTech Connect.
03/07/2003.
"lbnl--52379"
": EB4001000"
Pruess, Karsten; Shan, Chao.
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Funding Information
DE-AC02-05CH11231
G31902
View MARC record | catkey: 14399596