Quantitative Visualization of Microbubble Streams in Taylor Vortices

• WATAMURA Tomoaki

  Graduate School of Engineering, Hokkaido University

• TASAKA Yuji

  Graduate School of Engineering, Hokkaido University

• MURAI Yuichi

  Graduate School of Engineering, Hokkaido University

抄録

In this study, the motions and distributions of microbubbles in Taylor—Couette vortices were simultaneously measured by using an imaging approach. To obtain the velocity of microbubbles and the velocity distribution of the liquid phase, particle tracking velocimetry (PTV) adopting laser induced fluorescence (LIF) technique were employed by a single color-imaging video camera. This setup enabled us to distinguish tracer particles from microbubbles in captured images. The modifications in the waviness of Taylor vortices, enhancement of the basic wave and reduction of the modulation wave, are consistent with a recent study (Watamura et al., 2010). Further, the simultaneous measurements of velocity field and microbubble motions show a preferential distribution and organized ascending motion of the microbubbles in the wavy vortical structure of Taylor—Couette flows.

収録刊行物

• Theoretical and Applied Mechanics Japan

  Theoretical and Applied Mechanics Japan 61 (0), 123-131, 2013

  日本学術会議 「機械工学委員会・土木工学・建築学委員会合同IUTAM分科会」

詳細情報

• CRID: 1390282680188380160
• NII論文ID: 130004463836
• DOI: 10.11345/nctam.61.123
• ISSN: 13494244
• ISSN: 13480693
• 本文言語コード: en
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可