A periodically forced flow displaying symmetry breaking via a three-tori gluing bifurcation and two-tori resonances

    Authors

    F. Marques; J. M. Lopez;J. Shen

    Comments

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    Abbreviated Journal Title

    Physica D

    Keywords

    periodic forcing; Taylor-Couette flow; symmetry breaking; gluing; bifurcation; Naimark-Sacker bifurcation; TAYLOR-COUETTE FLOW; ANOMALOUS MODES; CYLINDRICAL GEOMETRIES; INNER; CYLINDER; EQUATIONS; 2ND-ORDER; ENDWALL; SYSTEM; MOTION; FLUID; Mathematics, Applied; Physics, Multidisciplinary; Physics, Mathematical

    Abstract

    The dynamics due to a periodic forcing (harmonic axial oscillations) in a Taylor-Couette apparatus of finite length is examined numerically in an axisymmetric subspace. The forcing delays the onset of centrifugal instability and introduces a Z(2) symmetry that involves both space and time. This paper examines the influence of this symmetry on the subsequent bifurcations and route to chaos in a one-dimensional path through parameter space as the centrifugal instability is enhanced. We have observed a well-known route to chaos via frequency locking and torus break-up on a two-tori branch once the Z(2) symmetry has been broken. However, this branch is not connected in a simple manner to the Z(2)-invariant primary branch. An intermediate branch of three-tori solutions, exhibiting heteroclinic and homoclinic bifurcations, provides the connection. On this three-tori branch, a new gluing bifurcation of three-tori is seen to play a central role in the symmetry breaking process. (C) 2001 Elsevier Science B.V. All rights reserved.

    Journal Title

    Physica D

    Volume

    156

    Issue/Number

    1-2

    Publication Date

    1-1-2001

    Document Type

    Article

    Language

    English

    First Page

    81

    Last Page

    97

    WOS Identifier

    WOS:000169908300005

    ISSN

    0167-2789

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