EOS9nT: A TOUGH2 module for the simulation of flow and solute/colloid transport

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EOS9nT is a new TOUGH2 module for the simulation of flow and transport of an arbitrary number n of tracers (solutes and/or colloids) in the subsurface. The module first solves the flow-related equations, which are comprised of (a) the Richards equation and, depending on conditions, may also include (b) the flow equation of a dense brine or aqueous suspension and/or (c) the heat equation. A second set of transport equations, corresponding to the n tracers, are then solved sequentially. The low concentrations of the n tracers are considered to have no effect on the liquid phase, thus making possible the ... continued below

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7 p.

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Moridis, G.J.; Wu, Y.S. & Pruess, K. April 1, 1998.

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Description

EOS9nT is a new TOUGH2 module for the simulation of flow and transport of an arbitrary number n of tracers (solutes and/or colloids) in the subsurface. The module first solves the flow-related equations, which are comprised of (a) the Richards equation and, depending on conditions, may also include (b) the flow equation of a dense brine or aqueous suspension and/or (c) the heat equation. A second set of transport equations, corresponding to the n tracers, are then solved sequentially. The low concentrations of the n tracers are considered to have no effect on the liquid phase, thus making possible the decoupling of their equations. The first set of equations in EOS9nT provides the flow regime and account for fluid density variations due to thermal and/or solute concentration effects. The n tracer transport equations account for sorption, radioactive decay, advection, hydrodynamic dispersion, molecular diffusion, as well as filtration (for colloids only). EOS9nT can handle gridblocks or irregular geometry in three-dimensional domains. Preliminary results from four 1-D verification problems show an excellent agreement between the numerical predictions and the known analytical solutions.

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7 p.

Notes

INIS; OSTI as DE98058253

Source

  • TOUGH `98 workshop, Berkeley, CA (United States), 4-6 May 1998

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  • Other: DE98058253
  • Report No.: LBNL--41639
  • Report No.: CONF-980559--
  • Grant Number: AC03-76SF00098
  • DOI: 10.2172/778898 | External Link
  • Office of Scientific & Technical Information Report Number: 674579
  • Archival Resource Key: ark:/67531/metadc712029

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • April 1, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • May 18, 2016, 5:42 p.m.

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Moridis, G.J.; Wu, Y.S. & Pruess, K. EOS9nT: A TOUGH2 module for the simulation of flow and solute/colloid transport, article, April 1, 1998; United States. (digital.library.unt.edu/ark:/67531/metadc712029/: accessed October 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.