### 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 language | English (US) |
---|---|

Pages (from-to) | 233-253 |

Number of pages | 21 |

Journal | Theoretical and Computational Fluid Dynamics |

Volume | 12 |

Issue number | 4 |

DOIs | |

State | Published - Jan 1 1998 |

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### All Science Journal Classification (ASJC) codes

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

### Cite this

*Theoretical and Computational Fluid Dynamics*,

*12*(4), 233-253. https://doi.org/10.1007/s001620050108

}

*Theoretical and Computational Fluid Dynamics*, vol. 12, no. 4, pp. 233-253. https://doi.org/10.1007/s001620050108

**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.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Computation of vortex shedding and radiated sound for a circular cylinder

T2 - Subcritical to transcritical Reynolds numbers

AU - Cox, Jared S.

AU - Brentner, Kenneth Steven

AU - Rumsey, Christopher L.

PY - 1998/1/1

Y1 - 1998/1/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0032283099&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032283099&partnerID=8YFLogxK

U2 - 10.1007/s001620050108

DO - 10.1007/s001620050108

M3 - Article

AN - SCOPUS:0032283099

VL - 12

SP - 233

EP - 253

JO - Theoretical and Computational Fluid Dynamics

JF - Theoretical and Computational Fluid Dynamics

SN - 0935-4964

IS - 4

ER -