title: Irregular scattering of acoustic rays by vortices.
abstract: The scattering of high-frequency sound wave, under geometrical acoustic approximation, by three stationary vortices in two dimensions is investigated. For a sufficiently high Mach number of the vortex flow, the scattering of sound rays becomes irregular, displaying a new example of chaotic scattering for a time-reversal breaking system. The fractal dimension, as well as the unstable and stable manifolds of the scattering dynamics, is presented.
authors.affiliation: Laboratoire d'Acoustique de l'Universite du Maine, UMR CNRS 6613, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France.
authors.forename: V
authors.initials: V
authors.lastname: Pagneux
authors.forename: A
authors.initials: A
authors.lastname: Maurel