| Presentation | 2009-04-24 Behavior of a bubble adhered to wall in ultrasonic field : Effect of bubble-wall interaction Taisuke YOSHIKAWA, Kenji YOSHIDA, Yoshiaki WATANABE, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper demonstrates behaviors of an adhered bubble under ultrasound irradiation, based a real time observations using a high-speed video camera. It was investigated whether property of wall affected bubble behaviors, focusing on the property such as acoustic impedance and elasticity. Brass and agar gel were used as a rigid wall and a soft material, respectively. In case of the brass wall, gravity center of the bubble rapidly moved toward the brass surface. However, the significant translation of a bubble was not observed in case of the agar gel. It was supposed that observed translation of a bubble adhered to the brass wall was induced by hypothetical Secondary Bjerknes force between the bubble and wall. Moreover, a difference in formations of the micro-jet during bubble collapse was found. In case of the brass, it seemed that the rapid bubble translation toward the brass surface related to the generation of micro-jet. In case of the agar gel, observed results indicated that the bubble vibration restricted by the agar surface led to the micro-jet generations. These results show the dependence of the bubble behaviors on the acoustic impedance and elasticity of the wall. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | adhered bubble / micro-jet / non-spherical vibration / Secondary Bjerknes force / translation |
| Paper # | US2009-3 |
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| Conference Information | |
| Committee | US |
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| Conference Date | 2009/4/17(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Ultrasonics (US) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Behavior of a bubble adhered to wall in ultrasonic field : Effect of bubble-wall interaction |
| Sub Title (in English) | |
| Keyword(1) | adhered bubble |
| Keyword(2) | micro-jet |
| Keyword(3) | non-spherical vibration |
| Keyword(4) | Secondary Bjerknes force |
| Keyword(5) | translation |
| 1st Author's Name | Taisuke YOSHIKAWA |
| 1st Author's Affiliation | Faculty of Engineering, Doshisha University() |
| 2nd Author's Name | Kenji YOSHIDA |
| 2nd Author's Affiliation | Faculty of Life and Medical Sciences, Doshisha University |
| 3rd Author's Name | Yoshiaki WATANABE |
| 3rd Author's Affiliation | Faculty of Life and Medical Sciences, Doshisha University |
| Date | 2009-04-24 |
| Paper # | US2009-3 |
| Volume (vol) | vol.109 |
| Number (no) | 17 |
| Page | pp.pp.- |
| #Pages | 6 |
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