Coherent Structures in a Fully Developed Turbulent Pipe Flow

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概要

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• Coherent structures in a fully developed turbulent pipe flow are studied experimentally. The space-time correlations between wall pressure fluctuations and two components of velocity fluctuations, and behavior of those fluctuations conditionally sampled with respect to bursts are measured. According to the results, a factor of the averaged convection velocity of the burst to the center velocity is about 0.68, the bursts contribute to the production of higher frequency components of the wall pressure fluctuations, and further, there exist large scale coherent structures which extend from near the wall to the center region of the flow. Moreover, these results are compared with those of the fully developed turbulent plane boundary layer flow.

• 一般社団法人日本機械学会の論文

著者

• IIDA Sei-ichi

  Faculty of Engineering, Hokkaido University

• Iida Sei-ichi

  Faculty Of Engineering Hokkaido University

• TANIFUJl Nozomi

  Sumitomo Metal Industry LTD

• lCHIJO Makoto

  Faculty of Engineering, Hokkaido University

• KOBASHI Yasujiro

  Hokkaido Institute of Technology

• Lchijo Makoto

  Faculty Of Engineering Hokkaido University

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• Coherent Structures in a Fully Developed Turbulent Pipe Flow
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• A Study on Chaotic Mixing in 2D Cavity Flows : Effects of Reynolds Number and Amplitude of Lid Velocity

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