The Proceedings of the Fluids engineering conference
Online ISSN : 2424-2896
2012
Session ID : 0129
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0129 Motion and Wake Vortices of a Rising Bubble
Takafumi TANAKAToru KOSOSatoshi DOZONO
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract
Motion and wake vortices of a rising bubble of Re =246 in a still liquid in a vertical pipe are studied experimentally using photochromic tracer and high-speed cinematography. Three velocity components of bubble measured by video image processing show that zig-zag motion of the bubble is dominated by lateral velocities. And the shedding of vortex loops behind a bubble correlates well with lateral motion and orientation of the bubble. A stereo display system was constructed by commercial stereo display and used to examine the complex three-dimensional vortices and dye patters in the bubble wake.
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© 2012 The Japan Society of Mechanical Engineers
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