Chaotic advection and targeted mixing

Tounsia Benzekri (1, 2) , Cristel Chandre (3) , Xavier Leoncini (4) , Ricardo Lima (1, 2) , Michel Vittot (3)

1 CPT - Centre de Physique Théorique - UMR 6207
2 CPT - Centre de Physique Théorique - UMR 7332
3 nldyncpt
4 PIIM - Physique des interactions ioniques et moléculaires

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 compared with 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 the whole domain (enhancement of mixing within the rolls).

Domaines: Dynamique Chaotique [nlin.CD]

Tounsia Benzekri, Cristel Chandre, Xavier Leoncini, Ricardo Lima, Michel Vittot. Chaotic advection and targeted mixing. Physical Review Letters, 2006, 96, pp.124503. ⟨10.1103/PhysRevLett.96.124503⟩. ⟨hal-00008127⟩