Computational investigation of sodium-water reaction sensitivity

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高田 孝; 山口 彰

Takata, Takashi; Yamaguchi, Akira

ナトリウム冷却高速炉における蒸気発生器伝熱管破損時に発生するNa-水反応の感度解析を、多次元および多相流解析コードSERAPHIMを用いて実施した。Na-水反応現象における界面積濃度およびNaOHの蒸発が与える影響を評価した結果、界面積濃度は高温領域の分布に、NaOHの蒸発は最高温度に大きな影響を及ぼす見を得た。

Sensitivity study of Sodium-Water Reaction (SWR), which will occur in a steam generator of a liquid sodium cooled fast reactor when a heat transfer tube is failed, have been carried out using the multi-dimensional and multi-phase analysis code SERAPHIM. An influence of the interfacial area density and the sodium hydroxide (NaOH) evaporation on the SWR phenomena is investigated. As a result, it is concluded that the interfacial area density affects the high temperature region strongly. It is also investigated that the evaporation of NaOH influences on the maximum temperature in the SWR.