SEMINAIRE MERCREDI 11 OCTOBRE 2006
14 heures
Salle Séminaire 5
Centre de Physique Théorique
Marseille-Luminy

Xavier Leoncini
CPT

Title: Particles dynamics in regular flows

Abstract: In this talk we will consider the dynamics of passive tracers in a
system of three point vortices, in an array of vortices as well as
three-dimensional steady flows. These dynamics are all particular
examples of chaotic advection. This phenomenon has fundamental
implication in various physical systems. On large scales one may for
instance think as plasma physics (confinement), geophysical flows
(pollution). But also on a much smaller scale for micro-fluidic
devices, for which chaotic advection seems to be the best candidate in
order to trigger mixing wihtout breaking anything. For the point
vortex flow some motivation of the choice of the flow and the dynamics
of vortices will be given.