Measurement of Amount of Generated Acoustic Cavitation: Investigation of Spatial Distribution of Acoustic Cavitation Generation Using Broadband Integrated Voltage
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概要
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We have been developing a measurement technique for the amount of generated acoustic cavitation using broadband integrated voltage (BIV), calculated from high-frequency components of broadband noise in the output signal of a cavitation sensor. BIV is a signal caused by the effect of bubbles produced by acoustic cavitation. In this study, one dimension distribution of cavitation generation in a water vessel was measured in terms of BIV and sound pressure. The results show that the peak positions of BIV and sound pressure were different. Although the sound pressure was high at the center position generating the flow toward the surface of water, BIV was low because no cavitation bubbles were trapped. Hence, BIV has potential use in the measurement of the spatial distribution of cavitation generation more accurately than sound pressure.
- 2011-07-25
著者
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Takeuchi Shinichi
Faculty Of Engineering Toin University Of Yokohama
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Uchida Takeyoshi
Acoustics and Ultrasonics Section, National Metrology Institute of Japan (NMIJ), National Institute
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Kikuchi Tsuneo
Acoustics And Ultrasonics Section National Metrology Inst. Of Japan (nmij) National Inst. Of Advance
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Kikuchi Tsuneo
Acoustics and Ultrasonics Section, Acoustics and Vibration Metrology Division, National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8563, Japan
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Takeuchi Shinichi
Faculty of Biomedical Engineering, Toin University of Yokohama, 1614 Kurogane-cho, Aoba-ku, Yokohama 225-8502, Japan
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Takeuchi Shinichi
Faculty of Biomedical Engineering, Toin University of Yokohama, Yokohama 225-8502, Japan
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Uchida Takeyoshi
Acoustics and Ultrasonics Section, Acoustics and Vibration Metrology Division, National Metrology Institute of Japan (NMIJ), Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8563, Japan
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Uchida Takeyoshi
Acoustics and Ultrasonics Section, Acoustics and Vibration Metrology Division, National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8563, Japan
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