| Project/Area Number |
24760140
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Fluid engineering
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Keywords | 液膜 / 気泡 / 気泡クラスター / 界面活性剤 / 電解質 / 気泡の合体 / 光干渉計 / 気泡クラスタ / 流体工学 / レーザー干渉計 |
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| Research Abstract |
The drainage process and the rupture of a thin liquid film formed between interfaces and the clustering behavior of spherical bubbles with the constraint of motions in two-dimensional plain, which govern the fluid structure of bubbly flows through bubble-bubble and bubble-wall interactions, have been investigated experimentally. On the behavior of the thin liquid film formed between a rigid surface and an approaching bubble surface with a constant speed, the impurities such as surfactants and electrolytes in water greatly affect and avoid the drainage and rupture of the film, and the quantitative evaluation of their time evolutional thickness distributions has been done. On the other hand, similar phenomena for the clustering behaviors of the spherical bubbles rising under an inclined flat plate have been clarified regardless of no-slip and free-slip boundary conditions of the bubble surface.
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