Analysis of Burnup Effects and its Integrity Assessment in the Interim of Irradiation with Molecular Dynamics
Abstract
Burnups can cause major structural changes in the edge of the fuel rod and a general degradation of the thermal conductivity. In irradiated mixed oxide fuels of UO2, PuO2 with NpO2 as fission products (FP) various chemical states depending on the conditions of the fuel is developed. This work, we firstly applied the MD relation to obtain the thermal conductivity of UO2, PuO2, and (U, Pu) O2 in temperature range of 300-2000 K. Lattice parameter, Burnup and the thermal conductivity were then calculated for specified UO2 and PuO2. This calculation relates the degradation of thermal conductivity with a number of pores and increasing temperature. Finally, the migration energy barrier and the recovery energies of the obstruction type defects were calculated with molecular dynamics simulation.
Recommended Citation
A. K. Willie et al., "Analysis of Burnup Effects and its Integrity Assessment in the Interim of Irradiation with Molecular Dynamics," MRS Advances, vol. 5, no. 33 thru 34, pp. 1799 - 1810, Springer; Materials Research Society, Jan 2020.
The definitive version is available at https://doi.org/10.1557/adv.2020.19
Department(s)
Civil, Architectural and Environmental Engineering
Second Department
Mechanical and Aerospace Engineering
Keywords and Phrases
molecular; oxide; thermal conductivity
International Standard Serial Number (ISSN)
2059-8521
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Springer; Materials Research Society, All rights reserved.
Publication Date
01 Jan 2020