A Lagrangian approach to ex-vessel corium spreading over ceramic and concrete substrates using moving particle hydrodynamics

Ryo Yokoyama,Masahiro Kondo,Shunichi Suzuki,Michael Johnson,Shuichiro Miwa,Marco Pellegrini,Arthur Denoix,Viviane Bouyer,Christophe Journeau,Koji Okamoto

Nuclear Engineering and Design（2022）

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摘要

•Highly melt spreading is analyzed with the moving particle hydrodynamics (MPH).•No-slip/slip boundary conditions are developed for reproducing the spreading behavior under active ceramics and concrete substrates.•VULCANO VE-U9 spreading experiment is utilized for the validation of MPH.•Crawling and gliding spreading motions are observed under ceramics and concrete, respectively.

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关键词

Corium spreading,Severe accident,Particle method,Slip boundary,Viscous fluid

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