816 高速炉における複合現象の数値実験技術開発 : (3) ナトリウム・水反応と伝熱流動

概要

論文の詳細を見る
A multi-phase and multi-component numerical simulation method (SERAPHIM code) is developed to investigate a mechanism of sodium-water reaction phenomena, which take place when pressurized water leaks from failed heat transfer tubes in a steam generator of liquid metal cooled fast reactor. As a sodium-water reaction mechanism, the surface reaction model and the gas phase reaction model are implemented. HSMAC method is adopted for numerical solution and the MPI method is applied for a parallel computing. The present method demonstrates a good performance for parallel computation. Two-dimensional numerical simulation of the sodium-water reaction is carried out. As a result, it is found that the maximum temperature is kept constant because the interface between liquid sodium and water vapor is covered with hydrogen gas that is produced by the sodium-water reaction, which prevent the reactant transfer. It is demonstrated that the numerical quantification of the sodium-water reaction accident by SERAPHIM code is practicable.
社団法人日本機械学会の論文
2002-10-30