Computation of vortex shedding and radiated sound for a circular cylinder: Subcritical to transcritical Reynolds numbers

Jared S. Cox, Kenneth Steven Brentner, Christopher L. Rumsey

Research output: Contribution to journalArticle

96 Citations (Scopus)

Abstract

The Lighthill acoustic analogy combined with Reynolds-averaged Navier-Stokes flow computations are used to investigate the ability of existing technology to predict the tonal noise generated by vortex shedding from a circular cylinder for a range of Reynolds numbers (100 ≤ Re ≤ 5 million). Computed mean drag, mean coefficient of pressure, Strouhal number, and fluctuating lift are compared with experiment. Two-dimensional calculations produce a Reynolds number trend similar to experiment but incorrectly predict many of the flow quantities. Different turbulence models give inconsistent results in the critical Reynolds number range (Re ≈ 100000). The computed flow field is used as input for noise prediction. Two-dimensional inputs overpredict both noise amplitude and frequency; however, if an appropriate correlation length is used, predicted noise amplitudes agree with experiment. Noise levels and frequency content agree much better with experiment when three-dimensional flow computations are used as input data.

Original languageEnglish (US)
Pages (from-to)233-253
Number of pages21
JournalTheoretical and Computational Fluid Dynamics
Volume12
Issue number4
DOIs
StatePublished - Jan 1 1998

Fingerprint

vortex shedding
Vortex shedding
circular cylinders
Circular cylinders
Reynolds number
Acoustic waves
acoustics
Experiments
noise prediction
Strouhal number
Stokes flow
three dimensional flow
turbulence models
Turbulence models
drag
Drag
Flow fields
flow distribution
Acoustics
trends

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Condensed Matter Physics
  • Engineering(all)
  • Fluid Flow and Transfer Processes

Cite this

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abstract = "The Lighthill acoustic analogy combined with Reynolds-averaged Navier-Stokes flow computations are used to investigate the ability of existing technology to predict the tonal noise generated by vortex shedding from a circular cylinder for a range of Reynolds numbers (100 ≤ Re ≤ 5 million). Computed mean drag, mean coefficient of pressure, Strouhal number, and fluctuating lift are compared with experiment. Two-dimensional calculations produce a Reynolds number trend similar to experiment but incorrectly predict many of the flow quantities. Different turbulence models give inconsistent results in the critical Reynolds number range (Re ≈ 100000). The computed flow field is used as input for noise prediction. Two-dimensional inputs overpredict both noise amplitude and frequency; however, if an appropriate correlation length is used, predicted noise amplitudes agree with experiment. Noise levels and frequency content agree much better with experiment when three-dimensional flow computations are used as input data.",
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Computation of vortex shedding and radiated sound for a circular cylinder : Subcritical to transcritical Reynolds numbers. / Cox, Jared S.; Brentner, Kenneth Steven; Rumsey, Christopher L.

In: Theoretical and Computational Fluid Dynamics, Vol. 12, No. 4, 01.01.1998, p. 233-253.

Research output: Contribution to journalArticle

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