Massively Parallel Subsurface Hydrogeochemistry Modeling at Waste
Disposal Sites
v3-1/22/98
PI:
Jin-Ping (Jack) Gwo -- CCS,
Gour-Tsyh (George) Yeh -- Pennsylvania State University,
Philip M. Jardine -- Environmental Sciences Division
(ESD),
Kumar Mahinthakumar -- CCS
Description:
In the past few decades, modeling of the heterogeneities of the
subsurface systems has been largely confined to hydrological
properties such as hydraulic conductivity, porosity, and
adsorption. Large-scale, or even laboratory-scale, geochemical
heterogeneity, or hydrogeochemistry, modeling was rarely
conducted because of the lack of mechanistical understanding of
the complex geochemistry and the scarcity of computers capable of
handling such complexities. The objective of this study is to
include geochemistry in previously developed hydrogeological
frameworks of subsurface flow and solute transport. Chemistry
kinetics and equilibrium will be incorporated into a flow and
solute coupled subsurface code, which will be ported to CCS
paragons and applied to two candidate waste disposal sites.
Our ultimate goals are:
- illuminate the complex hydrogeochemical
processes in subsurface systems,
- provide a tool for our
national waste and water resources management problems.
Date Begun: FY96
Related Information:
Project Task Breakdown
Results:
Publications:
- "A Parallel 3-Dimensional HYDROGEOCHEM and an
Application to a Proposed Waste Disposal Site at the Oak
Ridge National Laboratory", J.P. Gwo and G.-T. Yeh, EOS, Transactions,
American
Geophysical Union, Vol. 77, No. 46, p.F203, 1996. html
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Betsy A. Riley email: rileyba@ornl.gov