About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ceramic Materials for Nuclear Energy Research and Applications
|
| Presentation Title |
Quantifying the Impact of Fast Interface Diffusion and Free Surface Evolution on Fission Gas Release in UO2 Using a Phase-field Model |
| Author(s) |
Md Ali Muntaha, Michael Tonks, Larry Aagesen, Anders David Ragnar Andersson, Michael William Donald Cooper |
| On-Site Speaker (Planned) |
Md Ali Muntaha |
| Abstract Scope |
The transport and release of fission gas from UO2 reactor fuel has a significant impact on light water reactor safety and efficiency. This study aims to quantify the importance of interface diffusion and free surface evolution on fission gas release in UO2. We have modified a fission gas phase-field model in MOOSE to include a free surface to observe gas release and to have fast diffusion along grain boundaries and bubble surfaces. Our model predicts that incorporating fast interface diffusion changes the microstructure evolution and the fission gas release rate. Moreover, incorporating an interface thickness correction is necessary for the phase-field model to predict the behavior accurately. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Modeling and Simulation, Computational Materials Science & Engineering |