Study on Acoustic Cavitations in the Ultrasonic Radiation Field(<Special Issue>Advanced Technology of Vibration and Sound)

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概要

• 論文の詳細を見る

• Applications of ultrasound in cleaning industry and biomedical field are owed to acoustic cavitations. To investigate behaviors of acoustic cavitations, a standing wave field of piston ultrasonic radiation was set up in this paper. And the behaviors of acoustic bubbles in this standing wave field were studied experimentally. Expressions of sound pressure in this standing wave field with different boundary conditions were discussed. Drawn by the forces (Bejerknes forces, Buoyancy forces, etc.), stable bubbles distributed regularly in the standing wave field. Experiments were conducted to validate that the distribution of stable bubbles can visualize the distribution of sound pressure. Erosion tests on aluminum foiling demonstrate that erosion only occurs in sound pressure anti-node field which was caused by collapsed acoustic bubbles. The radial oscillation of acoustic bubble was observed using high speed camera; it was found that the bubble's radius was increased with increase of negative sound pressure.

• 一般社団法人日本機械学会の論文
• 2006-09-15

著者

• Fujihara Masaya

  Department Of Mechanical System Engineering Graduate School Of Engineering Hiroshima University

• WU Chaoqun

  Mechanical System Engineering, Graduate School of Engineering, Hiroshima University

• NAKAGAWA Noritoshi

  Mechanical System Engineering, Graduate School of Engineering, Hiroshima University

• FUJIHARA Masaya

  Mechanical System Engineering, Graduate School of Engineering, Hiroshima University

• WU Chaoqun

  Department of Mechanical System Engineering, Graduate School of Engineering, Hiroshima University

• Wu Chaoqun

  Department Of Mechanical System Engineering Graduate School Of Engineering Hiroshima University

• Nakagawa Noritoshi

  Department Of Mechanical System Engineering Graduate School Of Engineering Hiroshima University

関連論文

• Study on Acoustic Cavitations in the Ultrasonic Radiation Field(Advanced Technology of Vibration and Sound)
• Removal of Pipe Fouling Inside Pipes Using Ultrasonic Waves(Advanced Technology of Vibration and Sound)
• 213 Removal of the Fouling inside a Pipe using Ultrasonic Waves(O.S.5 Advanced Technology for Usage of Sound and Vibration I)
• 219 RESEARCH ON THE STIFFNESS AND BUFFERING CHARACTER OF ARTICULATED LEG MECHANISM OF DYNAMIC WALKING ROBOTS(General Session II)

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