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An experimentally validated mesoscale model for the effective thermal conductivity of U-Zr fuels

Journal Article · · Journal of Nuclear Materials
An experimentally validated mesoscale model was developed to simulate the effective thermal conductivity (ETC) of metallic U and U–Zr nuclear fuels. The effects of microstructure, temperature, composition, and interfacial thermal resistance (ITR) were investigated. Companion experiments were conducted to validate the model. The numerical simulations clearly demonstrate that accounting for the interface (Kapitza) thermal resistance and Zr precipitation is necessary to improve the model predictions. The dependence of the effective Kapitza resistance of depleted-U and U-10Zr on temperature was determined. Finally, for both materials, the largest difference between the model calculations and the experimental data was about 4.5%, which is within the precision of the experimental measurements.
Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States); Texas A & M Univ., College Station, TX (United States). Texas A & M Engineering Experiment Station; UT-Battelle LLC/ORNL, Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC07-05ID14517; NE0008764
OSTI ID:
2418322
Alternate ID(s):
OSTI ID: 1907022
Journal Information:
Journal of Nuclear Materials, Journal Name: Journal of Nuclear Materials Vol. 574; ISSN 0022-3115
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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