[1H09-12] Fluid and Accident Analysis 2

[1H09] Development of a coarse graining DEM for a simulation of solid particle behavior in a solid-liquid flow

*Yuki Mori¹, Kazuyoshi Uruga², Takeshi Tsukada², Akira Yamaguchi¹, Mikio Sakai¹ (1. Univ. of Tokyo, 2. CRIEPI)

Keywords:DEM-CFD method, Solid-liquid flow, Coarse graining DEM, Natural convection

High-level radioactive liquid wastes are vitrificated in a glass melter. For design and development of vitrification melter, understanding the behavior of platinum group particle by using numerical simulation is important. The DEM-CFD method is one of the standard numerical simulation methods for the solid-liquid flow. However, industrial applications of DEM-CFD method are still restricted because the number of calculated particles is not sufficiently large. To solve this problem, the coarse grain model, which is a scaling model of solid particles, were developed. However, the coarse grain model has not been applied to solid-liquid flow. In present study, the coarse grain model and the thermal calculation are applied to solid-liquid flow and verification tests are performed.