Mode competition between rotating waves in a swirling flow with reflection symmetry

Juan Lopez, F. Marques

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

Flow in a cylinder driven by the co-rotation of the top and bottom endwalls displays distinct instability mechanisms, depending on whether its aspect ratio (length to diameter) is large or small. When the cylinder length is about the same as its diameter, the two mechanisms compete and lead to a stable mixed mode solution. Using numerical computations of the three-dimensional Navier-Stokes equations, together with equivariant bifurcation and normal form theory, we explore the nature of this mode competition, both from a flow physics point of view and from a dynamical systems with symmetry point of view. The results help to clarify the distinct behaviours observed experimentally in some short and long cylinder flows.

Original languageEnglish (US)
Pages (from-to)265-288
Number of pages24
Journaljournal of fluid mechanics
Issue number507
DOIs
StatePublished - May 25 2004

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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