垂直上昇気液環状二相流の実験的研究 : 第1報、液膜特性に及ぼす圧力の影響

概要

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System pressure in gas-liquid two-phase annular flow causes a significant change in gas-liquid interfacial structures. The purpose of this study is to investigate the pressure effects on the characteristics of the liquid film in vertical gas-liquid annular flow. The void fractions were measured by the point electrode probe method and the film thickness data were obtained from these data. It was found that there exists a region in which the mean film thickness, the base film thickness and maximum height of wave crest versus superficial gas velocity curves show a decrease rapidly under high pressure conditions. In this study, system pressure in the closed circulation loop was changed from 0.3 to 20 MPa at constant fluid temperature in vertical upward flow.
宇部工業高等専門学校の論文