Presentation Information
[3C10]Validation of the heat transfer model in DEM-CFD method and development of the reduced-order model
*Hiroki Imai1, Toshiki Imatani1, Mikio Sakai1 (1. UTokyo)
Keywords:
Heat transfer,CFD-DEM,Eulerian Approach,Fixed bed
Heat transfer using particulate materials, such as in high-temperature gas reactors and decommissioning, is widely utilized in nuclear engineering. Along with this, simulation-based evaluations of these phenomena are increasingly required. However, conventional heat conduction analysis using Lagrangian methods faces challenges in terms of computational cost and coarse-graining when introducing complex models. To address these issues, we employ a Eulerian approach within the coupled analysis framework of computational fluid dynamics and the discrete element method (DEM) developed in our laboratory. This approach enables efficient evaluation of heat transfer through particulate materials with simplified computations. In this study, we apply this method to analyze heat transfer in fixed beds. The results demonstrate that the solid temperature distribution within the bed match experimental data. Furthermore, we construct a reduced-order model that successfully reproduces the thermal flow behavior.