Eur. Phys. J. B 32, 237-242 (2003)
https://doi.org/10.1140/epjb/e2003-00093-7

Study of the sound-vortex interaction: direct numerical simulations and experimental results

¹ LPS (UMR CNRS 8550) , École Normale Supérieure, 24 Rue Lhomond, 75231 Paris Cedex 05, France
² Laboratorio de Turbulencia, Departamento de Física, Universidad de Santiago de Chile, Casilla 307, Correo 2, Santiago, Chile

Corresponding author: ^a rberthet@lps.ens.fr

Received: 9 October 2002
Revised: 20 January 2003
Published online: 1 April 2003

Abstract

We present a study of sound propagation through a single vortex by direct numerical simulations (DNS) compared to experimental measurements. We analyse the amplitude and the phase shift of the sound wave when it interacts with the vortical flow and we display the focusing effects produced by the vortex. We show that the turbulent fluctuations have a little effect on the sound phase shift whereas they induce a strong defocusing effect on the sound amplitude.