Model Development for Thermal-Hydrology Simulations of a Full-Scale Heater Experiment in Opalinus Clay

Journal Article · 26 March 2024 · Nuclear Technology

DOI: https://doi.org/10.1080/00295450.2024.2304910 · OSTI ID:2472772

Hadgu, Teklu  ^[1]; Matteo, Edward N. ^[1]; Dewers, Thomas ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Disposal of commercial spent nuclear fuel in a geologic repository is studied. In situ heater experiments in underground research laboratories provide a realistic representation of subsurface behavior under disposal conditions. Here, this study describes process model development and modeling analysis for a full-scale heater experiment in opalinus clay host rock. The results of thermal-hydrology simulation, solving coupled nonisothermal multiphase flow, and comparison with experimental data are presented. The modeling results closely match the experimental data.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE Office of Nuclear Energy (NE); USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: NA0003525
• OSTI ID: 2472772
• Report Number(s): SAND--2024-13907J
• Journal Information: Nuclear Technology, Journal Name: Nuclear Technology Journal Issue: 9 Vol. 210; ISSN 0029-5450
• Publisher: Taylor & FrancisCopyright Statement
• Country of Publication: United States
• Language: English