Visualization of Behavior of Microbubble Attached to Solid Wall Loaded by Underwater Shock Wave Induced by Electrical Discharge

  • KOITA Taketoshi
    Waseda Research Institute for Science and Engineering, Waseda University
  • LIM Soowon
    Waseda Research Institute for Science and Engineering, Waseda University
  • NAMIHIRA Takao
    Institute of Industrial Nanomaterials, Kumamoto University
  • TOKORO Chiharu
    Faculty of Science and Engineering, Waseda University Graduate School of Engineering, The University of Tokyo

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Other Title
  • 放電誘起水中衝撃波の干渉による固体壁付着マイクロバブル挙動の可視化

Abstract

<p>This paper reports on the visualization results of the phenomena of interaction of underwater shock wave induced by the electrical pulsed discharge with microbubbles attached to the solid wall and the behavior of bubbles collapse caused by the shock wave loading. The effect of microbubble diameter on the behavior was investigated. The time histories of microbubble diameter which was constricted by the underwater shock wave loading was also researched by analyzing the visualized images. The images and analysis results quantitatively clarified that the time of microbubble collapse induced by the shock wave interaction was increased as the increased of that diameter.</p>

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