Experimental study of flow oscillation phenomenon in right-angle branch with double side branch

Taiki Korematsu, Hideki Narahashi, Tomoaki Namai, Hisashi Fujii, Toshiyuki Hayase, Ryuhei Yamaguchi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In the previous study, it was clarified in the right-angle branch with single side branch that the velocity periodically oscillates in the side branch, and the Strouhal number is independent of cross-sectional area ratio, the flow division ratio of side branch to main branch, and the Reynolds number. In the present study, the flow structure in the right-angle branch with double side branch has been experimentally studied in laminar steady flow using laser Doppler anemometry and particle image velocimetry. Consequently, the velocity also oscillates periodically in both side branches, and the Strouhal number is independent of the Reynolds number although the Strouhal number in the downstream side branch is a little larger than that in the upstream side branch. It has been clarified that the flow oscillation in the right-angle branch is a characteristic phenomenon caused from its geometry and the factor inducing oscillation would be high shear rate.

Original languageEnglish
Pages (from-to)280-285
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume74
Issue number2
DOIs
Publication statusPublished - 2008 Feb
Externally publishedYes

Keywords

  • Flow induced vibration
  • LDA
  • PIV
  • Pipe flow
  • Right-angle branch
  • Secondary flow
  • Separation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Experimental study of flow oscillation phenomenon in right-angle branch with double side branch'. Together they form a unique fingerprint.

  • Cite this