Kyushu Institute of Technology Department of Materials Science and Engineering, Faculty of Engineering
Institute of Low Temperature Science, Hokkaido University
Kyushu Institute of Technology Graduate School
Gakushuin University Computer Center
出版者
宇宙科学研究所
出版者（英）
The Institute of Space and Astronautical Science (ISAS)
雑誌名
宇宙利用シンポジウム 第19回 平成14年度
雑誌名(英)
Space Utilization Research: Proceedings of the Nineteenth Space Utilization Symposium
ページ
141 - 144
発行年
2003-02
抄録（英）
Behavior of fine bubbles in front of solidifying interface of C8H17SO3Na water solution was directly observed under the gravity condition from micro G to 2 G by combining Mach-Zehnder interferometer. Fine bubbles inside the concentration boundary layer of C8H17SO3Na formed in front of the interface move quickly toward the interface and are engulfed by the interface. On the other hand, the bubbles outside the boundary layer, just float up under 1.5 G and 2 G or don't move under micro G in the solution. The above motion of fine bubbles toward the interface can be explained reasonably based on the driving force, acting on the bubble, caused by the surface tension gradient along the bubble surface due to the concentration gradient of C8H17SO3Na in front of the interface.
水溶液の凝固界面前面における微細気泡のμG〜2G下での挙動
