[2I18-22] Thermal hydaulic Numerical Simulation

[2I18] Deepening Understanding of Ex-Vessel Corium Behavior by Multi-Physics Modeling

(6) Overview and Progress on Spreading Analysis by MPS Method(3)

*Akifumi Yamaji¹, Masahiro Furuya², Yuji Ohishi³, Jubaidah¹, Guangtao Duan¹ (1. Waseda University, 2. Central Research Institute of Electric Power Industry, 3. Osaka University)

Keywords:severe accident of a nuclear reactor, MPS method, ex-vessel corium behavior, corium spreading, MCCI

MPS method (one of the particle methods) is being developed for mechanistic modeling of ex-vessel corium behavior (spreading and MCCI) by combining with scale-effect test and the basic UO2 fuel property experiment. The program overview and progress on spreading analysis by MPS method, including analyses on VULCANO VE-U7 over different substrates (ceramic and concrete) will be reported.