Monday, June 16

10:30 AM-12:30 PM
Isleta Room

MS6
Thermal-Hydrologic Modeling in Geologic Disposal of High-Level Radioactive Waste (Part I of II)

Alterations to the natural hydrologic system due to the emplacement of heat generating radioactive waste are being investigated with respect to potential effects on waste repository performance. Numerical modeling to simulate coupled heat and groundwater flow is being employed in the unsaturated and saturated zones. Considerable uncertainties remain concerning appropriate conceptual models of flow processes and parameter values for geologic media. The speakers will present results of numerical simulations for various conceptual models, at different scales, and compare the effects of dimensionality for the thermal-hydrologic system at a potential repository at Yucca Mountain, Nevada.

Organizers: Nicholas D. Francis and Bill W. Arnold
Sandia National Laboratories, Albuquerque

10:30 Thermo-Hydrologic Modeling of the Potential Repository at Yucca Mountain Using a 3-D Site-Scale Unsaturated-Zone Model

Nicholas D. Francis, Organizer; C. K. Ho, Sandia National Laboratories, Albuquerque; Bill W. Arnold, Organizer; S. Mishra, W. H. Statham, and H. Zhang, INTERA, Austin, Texas; M. Bandurraga and J. Wu, Lawrence Berkeley National Laboratory

11:00 Thermal-Hydrologic Response in the Saturated Zone to a Potential High-Level Radioactive Waste Repository at Yucca Mountain, Nevada

Bill W. Arnold, Organizer

11:30 Three Dimensional Modeling of Near-Field Thermal-Hydrological Behavior at Yucca Mountain

Thomas A. Buscheck, Lawrence Livermore National Laboratory

12:00 Three Dimensional Modeling of an In Situ Heater Test

Jens T. Birkholzer and Y. W. Tsang, Lawrence Berkeley National Laboratory

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