[1F10-14] Molten Debris Behavior 1

[1F11] Development of molten core spreading model at severe accident

*Nobuhide Hara¹, Takuo Oda¹, Yoshiteru Komuro¹, Hironori Noguchi¹, Kouichi Tanimoto¹, Satoru Kamohara¹, Hiroshi Goda¹ (1. MHI)

Keywords:CFD, MCCI, Spreading, Molten Core

In severe accidents, spreading length of the molten core on the floor of the reactor cavity is affected by viscosity change, and floor melting. Accurate prediction of molten core spreading length is important for the safety enhancement. Validation results of spreading length are presented in this paper.