D223 複合粒子層内の沸騰現象に及ぼす粒子構造の影響(OS-18 多孔質の新しい展開II)

概要

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Boiling in packed bed is an important problem related to the geothermal system, the heat pipe, post accident analysis of liquid-cooled nuclear reactor debris and nuclear waste disposal. In this paper, the effect of structure of packed bed on boiling phenomenon in multiple packed beds filled with water has been investigated by numerical analysis. Two-dimensional boiling model in multiple packed beds has been proposed to obtain the distributions of water saturation, vapor pressure and temperature in multiple packed beds. In multiple packed bed composed of different particle beds, the water content becomes discontinuous at the interface because of the difference of the water characteristics between two layers. It was found that the water saturation and velocity of vapor strongly depend on the structure of multiple packed beds.
社団法人日本機械学会の論文
2005-11-02