Direct simulation of acoustic sound generated by two vortex rings

O. Inoue, Yuji Hattori

Research output: Contribution to conferencePaper

Abstract

Acoustic sounds generated by oblique collisions of two vortex rings with an equal strength are simulated numerically. By a finite difference method, the three-dimensional, unsteady, compressible Navier-Stokes equations are solved directly. The sixth-order accurate compact Fade scheme is used for spatial derivatives, together with the fourth-order accurate Runge-Kutta scheme for time integration. Four different values of collision angle of the two vortex rings are prescribed and effects of the collision angle on the vortex motion and sound generation are examined. Results show that the quadrupolar component of vortex sound is predominant for the case of head-on collision while for the case of oblique collision the octupolar component is also observed.

Original languageEnglish
Pages758-764
Number of pages7
DOIs
Publication statusPublished - 1998 Jan 1
Event4th AIAA/CEAS Aeroacoustics Conference, 1998 - Toulouse, France
Duration: 1998 Jun 21998 Jun 4

Other

Other4th AIAA/CEAS Aeroacoustics Conference, 1998
CountryFrance
CityToulouse
Period98/6/298/6/4

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Aerospace Engineering

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    Inoue, O., & Hattori, Y. (1998). Direct simulation of acoustic sound generated by two vortex rings. 758-764. Paper presented at 4th AIAA/CEAS Aeroacoustics Conference, 1998, Toulouse, France. https://doi.org/10.2514/6.1998-2329