[3F05-09] 溶融挙動

[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.)

キーワード：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.