Laser-sheet flow visualization on the wake behind a confined ring

Jiun-Jih Miau, E. G. Chiu, J. H. Chou

Research output: Chapter in Book/Report/Conference proceedingChapter


Flow over a ring model situated axisymmetrically in a circular pipe has been studied by laser-sheet flow visualization technique. Over 25 cases of rings in different sizes were investigated and flow characteristics observed are summarized into six regimes, in reference to two geometrical parameters of G/W and D/W. Here, W is the width of the ring, D is the mean diameter of the ring, and G is the gap width between the pipe wall and the outer edge of the ring. It is interesting to point out that vortex-shedding structures produced by a ring model can exist a considerable distance downstream in three of the six regimes, which correspond to different physical processes of shedding. (A)

Original languageEnglish
Title of host publicationUnknown Host Publication Title
PublisherNew York, USA, ASME; Fluid engineering division; FED vol. 128
ISBN (Print)0791808742, 9780791808740
Publication statusPublished - 1991 Jan 1

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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