Ablation and melting relocation of hemisphere vessel due to natural convection

Masahiro Furuya, Yoshiaki Oka

研究成果: Paper査読

1 被引用数 (Scopus)

抄録

In order to investigate ablation failure mode of lower head with molten core during a severe accident of light water reactors, ablation and melting relocation experiments were conducted with a hemisphere vessel with a drain hole. Three different silicone oil were used to investigate an effect of fluid viscosity to simulate a molten core. The hemisphere vessel is molded with lead bismuth eutectic alloy. The vessel wall thinning and melt relocation occurred just below the silicone oil level by ablation due to natural convection. For the lower-viscosity silicone oil, it results in breaking all around the vessel wall. On the contrary for the higher-viscosity silicone oil, the drain hole were ablated as well which enhance drainage flow. The time series of ablated molten wall and silicone oil weights drained from the hole were quantified separately on the basis of measured volume and weight of drained fluids for the code validation.

本文言語English
出版ステータスPublished - 2015 1月 1
外部発表はい
イベント23rd International Conference on Nuclear Engineering: Nuclear Power - Reliable Global Energy, ICONE 2015 - Chiba, Japan
継続期間: 2015 5月 172015 5月 21

Conference

Conference23rd International Conference on Nuclear Engineering: Nuclear Power - Reliable Global Energy, ICONE 2015
国/地域Japan
CityChiba
Period15/5/1715/5/21

ASJC Scopus subject areas

  • 原子力エネルギーおよび原子力工学

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