Double Diffusive Natural Convection in a Nuclear Waste Repository

Journal Article · Mon Jul 24 00:00:00 EDT 2006 · Nuclear Technology

OSTI ID:968925

Hao, Y; Nitao, J J; Buscheck, T A; Sun, Y

In this study, we conduct a two dimensional numerical analysis of double diffusive natural convection in an emplacement drift for a nuclear waste repository. In-drift heat and moisture transport is driven by combined thermal- and compositional-induced buoyancy forces. Numerical results demonstrate buoyancy-driven convective flow patterns and configurations during both repository heat-up and cool-down phases. It is also shown that boundary conditions, particularly on the drip-shield surface, have a strong impact on in-drift convective flow and transport.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 968925
• Report Number(s): UCRL-JRNL-223117
• Journal Information: Nuclear Technology, Journal Name: Nuclear Technology Vol. 163; ISSN 0029-5450; ISSN NUTYBB
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
54 ENVIRONMENTAL SCIENCES
58 GEOSCIENCES
BOUNDARY CONDITIONS
MOISTURE
NATURAL CONVECTION
NUMERICAL ANALYSIS
POSITIONING
RADIOACTIVE WASTES
TRANSPORT