|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Accident Tolerant Fuels for Light Water Reactor
||Thermal Conductivity of Uranium
||Fei Lin, Eric Tea, Manuel Umanzor, Shuxiang Zhou, Ryan Jacobs, Dane Morgan, Celine Hin
|On-Site Speaker (Planned)
Uranium and its alloys are being investigated for their use as metallic fuels for fast reactors. The safety and efficiency of these fuels depend notably on their swelling characteristics and thermal conductivity. However, modeling fundamental properties of actinide materials is challenging due to the sensitivity on the partial occupation of the 5f-orbitals. This has been illustrated by recent debates on the validity of different implementations of Density Functional Theory (all electron versus pseudopotential) and different exchange and correlation approximations (LDA, GGA, DFT+U) for Uranium. Moreover, the validation of modelling is not straightforward due to the scarcity of transport experiments and the difficulty in obtaining a Uranium single crystal. This particularly impacts thermodynamic, mechanical and thermal properties. In this study, we report the development of a Projector Augmented Wave pseudopotential for Uranium used for the calculation of mechanical properties, and thermal conductivity of uranium and its alloys.
||Planned: Supplemental Proceedings volume