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粒子-格子法連成計算による固体粒子堆積挙動の3次元シミュレーション

Three-dimensional simulation of solid-particle sedimentation using a particle-grid coupled method

大原 陽平*; 藤本 拓矢*; 西田 智*; 守田 幸路*; Guo, L.*; 田上 浩孝; 鈴木 徹

Ohara, Yohei*; Fujimoto, Takuya*; Nishida, Satoshi*; Morita, Koji*; Guo, L.*; Tagami, Hirotaka; Suzuki, Toru

高速炉の炉心損傷事故時に炉心外に流出しデブリとなって堆積する炉心物質の移行挙動を解析するために、多流体モデルに個別要素法を組み込んだ3次元ハイブリッド解析手法を開発し、粒子堆積挙動実験の解析によってモデル化手法の基本的な妥当性を検証した。

In order to assess sedimentation behavior of fuel debris during core disruptive accidents in sodium-cooled fast reactors, a three-dimensional particle-grid coupled method was developed. Through the analyses of basic experiments on the sedimentation behavior of solid particles, fundamental adequacy of the modeling approach was confirmed.

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