Direct numerical simulation of aeolian tones

O. Inoue, N. Hatakeyama, H. Hosoya, H. Shoji

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)

Abstract

Aeolian tones generated by a two-dimensional circular cylinder in a uniform flow at Re = 1, 000 are investigated by a direct numerical simulation (DNS). The unsteady, compressible Navier-Stokes equations are solved by a finite difference method over the entire field from near to far fields. Results show that sound pressure waves are generated by vortex shedding from the cylinder to its wake. The dipolar nature of the generated sound is confirmed; lift dipole dominates the sound field. It is found that both the mean pressure field and the Doppler effect play important roles in the propagation process of the sound. The DNS results are compared with the solutions obtained by the Curie's acoustic analogy. The results show that the Curie's solution well describes the generation mechanisms of the sound but cannot predict the directivity of sound propagation due to the lack of information on the mean pressure field.

Original languageEnglish
Publication statusPublished - 2001 Dec 1
Event7th AIAA/CEAS Aeroacoustics Conference and Exhibit, 2001 - Maastricht, Netherlands
Duration: 2001 May 282001 May 30

Other

Other7th AIAA/CEAS Aeroacoustics Conference and Exhibit, 2001
CountryNetherlands
CityMaastricht
Period01/5/2801/5/30

ASJC Scopus subject areas

  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Acoustics and Ultrasonics

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