HR: 1340h
AN: H23D-1624    [Abstracts]
TI: A Numerical Model of Coupled Fluid Flows, Thermal Transport, and Reactive Chemical Transport in Fractured and Porous Media
AU: * Wang, C
EM: chengw@mail.ucf.edu
AF: University of Central Florida, 4000 Central Florida Blvd, Orlando, FL 32816, United States
AU: Yeh, G
EM: gyeh@mail.ucf.edu
AF: University of Central Florida, 4000 Central Florida Blvd, Orlando, FL 32816, United States
AU: Li, M
EM: mli@cc.ncu.edu.tw
AF: Natioanl Central University, ChungLi, Chungli, TWN 03, Taiwan
AB: Accurate tools to reliably predict the migration and transformation of contaminants in the subsurface environment enhance the ability of environmental scientists, engineers and decision makers to analyze their impact and to evaluate the efficacy of alternative remediation techniques prior to incurring expense in the field. A mechanistic- based numerical model could provide such a tool. This paper communicates the development and verification of a mechanistically coupled fluid flow and reactive chemical transport under both fast and slow reactions in variably saturated porous and fractured media. Theoretical bases, numerical implementations, and modeling experiments of the model will be described. Two example problems will be presented. The first one will be a reactive transport problem to elucidate the non-isothermal effects on heterogeneous reactions. The second problem involves coupled fluid flows and reactive transport in fractured media. Its purposes are to examine the effects of precipitation and dissolution on fluid flow and matrix diffusion. It would help shade some lights on the retardation ability of grain matrices on the migration of metals and radionuclides.
DE: 0412 Biogeochemical kinetics and reaction modeling (0414, 0793, 1615, 4805, 4912)
DE: 0418 Bioremediation
DE: 1831 Groundwater quality
DE: 1832 Groundwater transport
DE: 1847 Modeling
SC: Union [U]
MN: 2007 Fall Meeting