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논문 기본 정보

자료유형
학술저널
저자정보
Nishida Koji (Institute of Nuclear Safety System) Sano Naoki (Institute of Nuclear Safety System) Sakurai Seitaro (Institute of Nuclear Safety System) Murase Michio (Institute of Nuclear Safety System)
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology Vol.56 No.3
발행연도
2024.3
수록면
886 - 892 (7page)
DOI
10.1016/j.net.2023.10.042

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초록· 키워드

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The cladding temperatures and axial mass distribution computed by MAAP5 were compared with their measured values in the test bundle of the Phebus Test FPT0. The computed cladding temperatures were in good agreed with the measured values in the pre-transient phase. In the transient heat-up phase, the computed temperatures were overestimated by the Baker-Just correlation in MAAP5, but the computed temperatures could simulate the subsequently measured values. The computed mass distribution in the axial direction was in qualitative agreement with the measured one for post-test fuel damage observations. The calculated flow areas of inner and outer regions in the test bundle were compared with the photographic observations. MAAP5 computed them at the height of 0.2 m where the molten pool formed was in qualitative agreement with the photographic observations. It was found that the remaining steam flow paths might be caused by the gas-liquid two-phase flow countercurrent flow limitation.

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