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Development and validation of the eutectic reaction model in JUPITER code

JUPITERコードの共晶反応モデルに対する妥当性検証解析

Chai, P.; 山下 晋; 吉田 啓之 

Chai, P.; Yamashita, Susumu; Yoshida, Hiroyuki

JUPITERコードの共晶反応モデルを改良し、一連の検証の研究が行われた。ジルカロイとステンレス鋼の間のバイナリ共晶反応も、BWRの制御棒ブレードとチャネルボックス間のマルチコンポーネントも、それぞれの分析解は以前の実験とよく一致している。偏差を完全になくすことはできなかったが、実験における反応性能は合理的に再現された。JUPITERコードは、シビアアクシデントにおける共晶反応の挙動を予測することが可能であると結論付けることができた。

The eutectic reaction model in JUPITER code was validated against two series of experimental tests that performed by JAEA. An experiment that aimed to evaluate the eutectic reaction between Zircaloy and Stainless steel, was simulated by JUPITER code to validate its reliability on predicting the binary eutectic reaction phenomenon. A comparison of the simulation and experimental results demonstrates good agreement on the increase rate of the solution depth at various temperature environments. Another series of tests which aimed to predict the eutectic reaction between the control rod blade and channel box in BWR, were simulated by JUPITER code to test its applicability on predicting the eutectic reaction between multiple mixture components. Although the deviation could not be completely eliminated, the reaction performance in the experiment was reasonably reproduced. As a result, it could be concluded that JUPITER code is feasible to predict the eutectic reaction behavior in nuclear severe accident.

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パーセンタイル:100

分野:Nuclear Science & Technology

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