OS9-4 サブクール沸騰流中の気泡凝縮挙動に関する研究(OS9 熱流動,循環型社会における動力エネルギー技術)

概要

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Characteristics of subcooled boiling are nonequilibrium and be caused by a nucleation boiling at the same time as a bubble condensation. It is difficult that a composite equation, which is applied for a two fluid model and three a fluid model for a phenomenon analysis, is established only fluid dynamics. Therefore, the composite equation is necessary that it is installed the liquid-vapor interaction equation. The establishment of the interaction equation is necessary several parameters. The several parameters are bubble diameter, bubble shape, interfacial density and interfacial share stress. It was known that the behavior of the bubble determines a void fraction, but it is not clear the relation. In this study is intended to consider that the bubble behavior, which was analyzed by high speed camera, has an effect on flow and void fraction. As the result, the diameter and a condensation velocity of the bubbler, which departs from heater, affect the flow and the void fraction.
社団法人日本機械学会の論文
2007-06-13