On 2/28/2025, Kai-en YANG, Sakai lab, Department of Nuclear Engineering and Management, (D3), received the “ Best Poster Award” at the 2025 Q-STEP Colloquium.

〈Name of award and short explanation about the award〉

It was given for the best posters in the 2025 Q-STEP Colloquium.

〈About awarded research〉

Title: Development of Multi-timescale Reduced-order Model for High-speed DEM-CFD simulation in a Bead Mill

In this study, a multi-timescale reduced order model (MT-ROM) is proposed for high-speed DEM-CFD simulations. Specifically, an error-estimation-based algorithm is designed to capture the MT dynamics in DEM-CFD, and thus to decide the optimal training data for data-driven ROM without the physical and temporal constraints. As the results, a series of bead mill DEM-CFD simulations are performed using MT-ROM to demonstrate its effectiveness. The acceleration is up to 5600 times compared to the physical model DEM-CFD with relative errors maintained under 5%, providing promising approach in realizing the digital twin of powder process systems.

〈Your impression & future plan〉

It is indeed my pleasure to be awarded one of the best posters in the highly competitive yearly Q-STEP colloquium, where numerous outstanding quantum science research was presented. My sincerest appreciation belongs to all the Sakai Lab members, especially Prof. Sakai, Dr. Guangtao Duan, and Dr. Shuo Li. Their selfless and continued support in conducting rigorous research was essential for this achievement. Aiming at realizing the digital twin of powder process systems, I will continue the research of data-driven ROM to approach the real-time simulations for powder process systems.