title: Chaotic advection and targeted mixing.
abstract: The advection of passive tracers in an oscillating vortex chain is investigated. It is shown that by adding a suitable perturbation to the ideal flow, the induced chaotic advection exhibits two remarkable properties which do not hold in the case of a generic perturbation: Particles remain trapped within a specific domain bounded by two oscillating barriers (suppression of chaotic transport along the channel), and the stochastic sea seems to cover this whole bounded domain (enhancement of mixing within the rolls).
authors.affiliation: Centre de Physique Théorique - UMR 6207, CNRS Luminy, case 907, F-13288 Marseille cedex 09, France.
authors.forename: T
authors.initials: T
authors.lastname: Benzekri
authors.forename: C
authors.initials: C
authors.lastname: Chandre
authors.forename: X
authors.initials: X
authors.lastname: Leoncini
authors.forename: R
authors.initials: R
authors.lastname: Lima
authors.forename: M
authors.initials: M
authors.lastname: Vittot