Vortex shedding from square prisms in smooth and turbulent flows

Yasuharu Nakamura, Yuji Ohya

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Visualization and measurements of velocity and pressure were made for the flow past prisms of variable length with square cross-section, placed normal to smooth and turbulent approaching flows. Square prisms shed vortices in one of the two fixed wake planes. The plane of shedding is switched irregularly from one to the other. Flow visualization confirms the two main effects of small-and large-scale turbulence on the flow past square prisms that had previously been suggested. In particular, large-scale turbulence intensifies vortex shedding from square prisms through resonant interaction, thereby reducing the base pressure considerably.

Original languageEnglish
Pages (from-to)77-89
Number of pages13
JournalJournal of Fluid Mechanics
Volume164
DOIs
Publication statusPublished - Jan 1 1986

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vortex shedding
Vortex shedding
Prisms
turbulent flow
Turbulent flow
prisms
Turbulence
turbulence
base pressure
flow visualization
Flow visualization
wakes
Vortex flow
Visualization
vortices
cross sections
interactions

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Vortex shedding from square prisms in smooth and turbulent flows. / Nakamura, Yasuharu; Ohya, Yuji.

In: Journal of Fluid Mechanics, Vol. 164, 01.01.1986, p. 77-89.

Research output: Contribution to journalArticle

Nakamura, Yasuharu ; Ohya, Yuji. / Vortex shedding from square prisms in smooth and turbulent flows. In: Journal of Fluid Mechanics. 1986 ; Vol. 164. pp. 77-89.
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