Vortex structure behind a highly heated cylinder in turbulent crossflow

Yuji Yahagi, Shogo Yoshino

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3 Citations (Scopus)

Abstract

Karman vortex structure behind a highly heated cylinder in a turbulent crossflow has been studied experimentally. The surface temperature of the cylinder is set up to 800°C. The Reynolds number based on the cylinder diameter is 750. For the heated cylinder set in the turbulent crossflow, the Karman vortex street can be clearly observed as the cylinder temperature is increased. Since the local temperature of the generated vortex is remarkably high compared with the main (low, the Karman vortex dissipating energy due to the main flow turbulence decreases with an increasing the cylinder temperature. Then, the local temperature of the vortex also decreases due to the turbulence motion. As the results, the vortex frequency-decreasing rate due to the cylinder heating in the turbulent crossflow becomes 1/2 compared with the laminar case.

Original languageEnglish
Pages (from-to)1219-1226
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume67
Issue number657
DOIs
Publication statusPublished - 2001 May

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Keywords

  • Fluid mechanics
  • Forced convection
  • Heat transfer
  • Kantian vortex
  • Local kinematic viscosity
  • Particle image velocimetry
  • Strouhal number
  • Turbulent flow
  • Vortex
  • Wake

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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