The Influence of Proposed Repository Thermal Load on MultiphaseFlow and Heat Transfer in the Unsaturated Zone of Yucca Mountain

Conference · Tue Feb 28 04:00:00 EST 2006

OSTI ID:919751

Wu, Y -S; Mukhopadhyay, Sumit; Zhang, Keni; Bodvarsson, G S

This paper investigates the impact of proposed repositorythermal-loading on mountain-scale flow and heat transfer in theunsaturated fractured rock of Yucca Mountain, Nevada. In this context, amodel has been developed to study the coupled thermal-hydrological (TH)processes at the scale of the entire Yucca Mountain. This mountain-scaleTH model implements the current geological framework and hydrogeologicalconceptual models, and incorporates the latest rock thermal andhydrological properties. The TH model consists of a two-dimensionalnorth-south vertical cross section across the entire unsaturated zonemodel domain and uses refined meshes near and around the proposedrepository block, based on the current repository design, drift layout,thermal loading scenario, and estimated current and future climaticconditions. The model simulations provide insights into thermallyaffected liquid saturation, gas- and liquid-phase fluxes, and elevatedwater and rock temperature, which in turn allow modelers to predict thechanges in water flux driven by evaporation/condensation processes, anddrainage between drifts.

• Research Organization: Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Office of Civilian Radioactive WasteManagement
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 919751
• Report Number(s): LBNL--59783
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CROSS SECTIONS
DESIGN
DRAINAGE
HEAT TRANSFER
MULTIPHASE FLOW
NEVADA
RADIOACTIVE WASTE MANAGEMENT
SATURATION
WATER
YUCCA MOUNTAIN