Finite-size particles, advection, and chaos: a collective phenomenon of intermittent bursting

Rene O. Medrano-T, Alessandro Paula Servio Moura, Tamas Tel, Ibere L. Caldas, Celso Grebogi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We consider finite-size particles colliding elastically, advected by a chaotic flow. The collisionless dynamics has a quasiperiodic attractor and particles are advected towards this attractor. We show in this work that the collisions have dramatic effects in the system's dynamics, giving rise to collective phenomena not found in the one-particle dynamics. In particular, the collisions induce a kind of instability, in which particles abruptly spread out from the vicinity of the attractor, reaching the neighborhood of a coexisting chaotic saddle, in an autoexcitable regime. This saddle, not present in the dynamics of a single particle, emerges due to the collective particle interaction. We argue that this phenomenon is general for advected, interacting particles in chaotic flows.

Original languageEnglish
Article number056206
Number of pages6
JournalPhysical Review. E, Statistical, Nonlinear and Soft Matter Physics
Volume78
Issue number5
DOIs
Publication statusPublished - 12 Nov 2008

Keywords

  • preferential concentration
  • open flows
  • plankton
  • turbulence
  • diffusion
  • dynamics
  • paradox
  • systems

Cite this