Numerical investigation of debris remelting in RPV lower head by a multiphase particle method
著者:
Guangtao Duan 酒井 幹夫 （東京大）
発刊日:
公開日:
Debris remeltingFluid-solid interactionLocal hot spotsMPS methodMulti-time scalePhase change
Guangtao Duan 酒井 幹夫 （東京大）
発刊日:
公開日:
カテゴリ: 第17回
キーワードタグ:Debris remeltingFluid-solid interactionLocal hot spotsMPS methodMulti-time scalePhase change
概要
Debris remelting may play an important role in the progression analysis of severe accidents and the safety design of nuclear power plants. This paper developed a multiphase moving particle semi-implicit (MPS) method by coupling the fluid-solid interaction, solid-solid interaction, heat transfer and phase change models. Then, the debris remelting in reactor pressure vessel (RPV) is simulated, and the influence of debris size and decay heat power via local hot spots is investigated.
