Analysis of the Cavitation Bubble Collapse by Observing the Faint Light Emission
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- TAKIURA Koki
- 東京大学 先端科学技術研究センター
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- CHINZEI Tsuneo
- 東京大学 先端科学技術研究センター
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- ABE Yusuke
- 東京大学大学院 医学系研究科
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- ISOYAMA Takashi
- 東京大学大学院 医学系研究科
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- IMACHI Kou
- 東京大学大学院 医学系研究科
Bibliographic Information
- Other Title
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- B309 微弱光観測によるキャビテーション気泡崩壊の解析
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Abstract
Mechanical heart valves (MHVs) are used as the prostheses for the patients with the irreversible heart valve disorder. The cavitation occurs on MHVs, and it could lead to the valve failure and also could damage blood cells. The cavitation bubble collapse causes high pressure and high temperature, then this severe condition brings about the cavitation erosion. The conventional observation method, such as a stroboscope and a highspeed camera, can hardly obtain the information about the cavitation bubble implosion. The researches on ultrasound showed that the collapsing bubbles emit the faint light, which is called sonoluminescence. Therefore, the observation of the faint light from the cavity collapse on a MHV was tried in this study. A highly sensitive CCD camera and a photomultiplier tube were adopted for spatial and temporal analysis of the cavity collapse, respectively. The faint light was captured around the position where the bubbles were observed with a stroboscope. Then the faint light emitted immediately after the disappearance of the bubbles on the photos obtained using a stroboscope. The results show that the observation of the faint light emission would be a powerful tool for the analysis of the flow-induced cavitation.
Journal
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- Journal of the Visualization Society of Japan
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Journal of the Visualization Society of Japan 23 (Supplement1), 445-446, 2003
The Visualization Society of Japan
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Details
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- CRID
- 1390001204619944960
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- NII Article ID
- 10012625621
- 130003649883
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- NII Book ID
- AA11907562
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- ISSN
- 1884037X
- 09164731
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed