Three-dimensional instabilities in the wake of a circular cylinder

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The two- and three-dimensional wake structure behind a circular cylinder has been computed using a high-order spectral element technique. For the two-dimensional computations the predictions are compared with accurate experimental results and agree to within experimental uncertainty for the Strouhal number and base pressure coefficient. For the three-dimensional simulations, the two modes of three-dimensional instability, designated as modes A and B, both found experimentally but not previously computationally, have been captured. Mode A appears first at a Reynolds number slightly less than 200. As the Reynolds number is increased, there is a transfer of energy to mode B, which has a wavelength approximately one-fourth that of mode A.

Original languageEnglish
Pages (from-to)190-196
Number of pages7
JournalExperimental Thermal and Fluid Science
Volume12
Issue number2
DOIs
Publication statusPublished - 1 Jan 1996

Keywords

  • Bluff-body wakes
  • Wake transition

Cite this

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title = "Three-dimensional instabilities in the wake of a circular cylinder",
abstract = "The two- and three-dimensional wake structure behind a circular cylinder has been computed using a high-order spectral element technique. For the two-dimensional computations the predictions are compared with accurate experimental results and agree to within experimental uncertainty for the Strouhal number and base pressure coefficient. For the three-dimensional simulations, the two modes of three-dimensional instability, designated as modes A and B, both found experimentally but not previously computationally, have been captured. Mode A appears first at a Reynolds number slightly less than 200. As the Reynolds number is increased, there is a transfer of energy to mode B, which has a wavelength approximately one-fourth that of mode A.",
keywords = "Bluff-body wakes, Wake transition",
author = "Mark Thompson and Kerry Hourigan and John Sheridan",
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Three-dimensional instabilities in the wake of a circular cylinder. / Thompson, Mark; Hourigan, Kerry; Sheridan, John.

In: Experimental Thermal and Fluid Science, Vol. 12, No. 2, 01.01.1996, p. 190-196.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Hourigan, Kerry

AU - Sheridan, John

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AB - The two- and three-dimensional wake structure behind a circular cylinder has been computed using a high-order spectral element technique. For the two-dimensional computations the predictions are compared with accurate experimental results and agree to within experimental uncertainty for the Strouhal number and base pressure coefficient. For the three-dimensional simulations, the two modes of three-dimensional instability, designated as modes A and B, both found experimentally but not previously computationally, have been captured. Mode A appears first at a Reynolds number slightly less than 200. As the Reynolds number is increased, there is a transfer of energy to mode B, which has a wavelength approximately one-fourth that of mode A.

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