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Konomura, Mamoru*; Kamiyama, Kenji
no journal, ,
A behavior of a heavy metal jet which ran into a water pool was analyzed with the Moving Particle Semi-implicit Method. A figure of the tip of jet was different from that of the experiment. We propose a modified calculating model with the MPS method.
Yamaji, Akifumi*; Furuya, Masahiro*; Oishi, Yuji*; Sato, Ikken; Li, X.*; Fukai, Hirofumi*; Madokoro, Hiroshi
no journal, ,
no abstracts in English
Li, X.; Yamaji, Akifumi*; Sato, Ikken*; Yamashita, Takuya
no journal, ,
This study presents a numerical evaluation of possible core material discharge behavior from the RPV lower head region including the penetrations (Control Rod Drive (CRD) Housing) in 1F Unit-2 with Lagrangian-based MPS method. Two-dimensional geometry is established to model CRD housing with simplified inner structures inthe center of RPV, with surrounding RPV walls and RPV insulation below. The initial temperature distribution/boundary conditions referenced the results from accident progression and global RPV CFD analysis (Series presentations (2), (5), and (7)). The results show that local CRD housing melting assumed at 15%Zr-85%Fe eutectic temperature (1523 K) before global RPV failure could result in melt discharge into the pedestal, which is consistent with the accident progression analysis and plant internal investigation results.
Konomura, Mamoru*; Kamiyama, Kenji
no journal, ,
A behavior of a heavy metal jet which ran into a water pool was analyzed with the Moving Particle Semi-implict Method. A pressure calculation without a free surface condition proved useful to suppress unrealistic cavity.
Konomura, Mamoru*; Kamiyama, Kenji
no journal, ,
A behavior of a heavy metal jet which ran into a water pool was analyzed with the Moving Particle Semi-implic Method. A little pressurization proved useful to suppress unrealistic cavity which appeared in the pool.
Bando, Yamato*; Yamaji, Akifumi*; Yamashita, Takuya
no journal, ,
no abstracts in English