OS8-07 高速増殖炉の過酷事故における溶融炉心冷却性に関する研究(OS8 軽水炉・新型炉・核燃料サイクル)

概要

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When a core disruptive accident (CDA) occurs, the post accident heat removal (PAHR) is required for the safety design of the Fast Breeder Reactor (FBR). In the present experiment, the molten material is injected into the water to estimate CDA. The visualized information is observed by using the high-speed video camera. The visualized information shows that the injection nozzle diameter influence the jet breakup length for this experimental condition. The median diameters of the fragment of the solidified molten material after the experiment are compared with the existing theories. Consequently, the median diameters of the fragment are located between Critical Weber Number theory and the most-unstable wavelength of the Orr-Sommerfeld equation. The quench behavior of the molten material jet in coolant is calculated for the FBR condition by using the heat transfer model that some of the experimental data is reflected to. Consequently, the influence that the jet velocity exerts on the quench can be grasped.
社団法人日本機械学会の論文
2005-06-28