Finite aspect ratio Taylor-Couette flow: Shil'nikov dynamics of 2-tori

Juan Lopez, Francisco Marques

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

The nonlinear dynamics of the flow in a short annular container driven by the rotation of the inner cylinder is studied using direct numerical simulations of the three-dimensional Navier-Stokes equations. The basic state is SO(2)×Z2 symmetric. For aspect ratios between 3.6 and 4.4, we have located three codimension-two bifurcations: a cusp, a double Hopf and a fold-Hopf bifurcation. All these local bifurcations are Z2-invariant. The breaking of Z2 symmetry involves very complex Shil'nikov-type dynamics, not directly connected to any of the three codimension-two bifurcations, but associated with five unstable limit cycles and a wealth of heteroclinic connections between them. Period-adding cascades, both direct and reverse, of 2-tori have been found. Narrow regions of chaotic dynamics are interspersed within these quasiperiodic solutions.

Original languageEnglish (US)
Pages (from-to)168-191
Number of pages24
JournalPhysica D: Nonlinear Phenomena
Volume211
Issue number1-2
DOIs
StatePublished - Nov 1 2005

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Keywords

  • Homoclinic and heteroclinic bifurcations
  • Shil'nikov dynamics
  • Symmetry breaking
  • Taylor-Couette flow

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics
  • Condensed Matter Physics
  • Applied Mathematics

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