On 29/08/2023, Rui LI, Sakai Lab., Department of Nuclear Engineering and Management (D3), received “Presentation Award” at the 19th Annual Meeting of Japan Society of Maintenology.

〈Name of award and short explanation about the award〉

Presentation Award

This award is presented to the individual with the most outstanding presentation skills among those who participated in the student session.

〈About awarded research〉

Studies of debris bed self-leveling are a key factor in debris relocation and are important for better understanding of nuclear severe accidents. In this study, the self-leveling phenomenon was numerically investigated by combining the DEM-CFD method and the coarse-grained DEM. Through this study, it was shown that the combined DEM-CFD method and the DEM coarse-grained model could simulate debris bed self-leveling, and the initiation criteria of the self-leveling phenomenon were identified The initiation criterion of the self-leveling phenomenon was identified.

〈Your impression & future plan〉

I would like to express my sincerest gratitude to my supervisor, Prof. Mikio Sakai, for his unconditional support and invaluable help. Additionally, I would like to express my gratitude to the members of the Sakai lab. In the future, further investigation into the mechanisms of the self-leveling phenomenon will be performed.