流体工学部門講演会講演論文集
Online ISSN : 2424-2896
セッションID: 303
会議情報
0303 高粘性アルカリ溶解会合性高分子溶液中における気泡上昇運動の詳細観察
太田 光浩徳井 紀彦藤本 修吾岩田 修一
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会議録・要旨集 フリー

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The motion of single bubbles rising in a hydrophobically modified alkali-soluble associative (HASE) polymer solution is experimentally examined. The polymeric liquid is made up of 1.6 wt% HASE polymer solution, which are adjusted to pH ≈ 7.0 by adding a sodium hydroxide solution. In this study, we focus on unique threadlike shapes formed at the bottom of the bubble. Trailing edges with threadlike branches are observed in detail for the Eotvos number. Consideration for trailing edges with threadlike branches is made based on enlarged pictures taken with a high-speed video camera. As the Eotvos number is increased, it is shown that the number of threadlike branch is increased.
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