[3F05-09] Melting Behavior

[3F07] An Improved MPS Algorithm for Modelling Crust Behavior in Corium Spreading

*Guangtao Duan¹, Akifumi Yamaji¹, Seiichi Koshizuka², Masahiro Furuya³, Yuji Ohishi⁴ (1. Waseda Univ., 2. Univ. Of Tokyo, 3. Central Research Institute of Electric Power Industry, 4. Osaka Univ.)

Keywords:MPS method, Corium spreading, Crust formation, High viscosity, Solution algorithm, Implicit method

Crust does not immobilize when modeled by highly viscous fluid in the original MPS. A new algorithm is proposed for pressure/viscosity coupling to solve this problem. The VULCANO VE-U7 experiment is simulated for validation.