A Study on Impulsive Pressure of a Collapsing Cavitation Bubble : Evaluation of the Effect of a Water Microjet : Fluids Engineering

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説明

The motion of a spark-induced cavitation bubble is examined near a solid boundary by high-speed photography and the impulsive pressure generated at its collapse-reexpansion stage is detected by a local pressure sensor with four small sensor elements. As a result, the impulsive pressures of a shock wave and of a water microjet are separately measured by the local pressure sensor. The result is ascertained by high-speed photographs of the cavitation bubble, which indicate that a microjet is generated at the top surface of the collapsing bubble and collides against one of the pressure sensor elements through the interior of the bubble at its collapsing stage. Moreover, the diameter of the generated microjet tip and its travelling velocity through the interior of the bubble are evaluated to be about 0.5mm and 100~110 m/s, respectively.

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詳細情報 詳細情報について

  • CRID
    1572261552051379456
  • NII論文ID
    110002346078
  • NII書誌ID
    AA10701641
  • ISSN
    0913185X
  • 本文言語コード
    en
  • データソース種別
    • CiNii Articles

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