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

Abstract

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.

Journal

• Theoretical and Applied Mechanics Japan

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

  National Committee for IUTAM

Details

• CRID: 1390282680188380160
• NII Article ID: 130004463836
• DOI: 10.11345/nctam.61.123
• ISSN: 13494244
• ISSN: 13480693
• Text Lang: en
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed