On three-dimensional quasiperiodic Floquet instabilities of two-dimensional bluff body wakes

H. M. Blackburn, Juan Lopez

Research output: Contribution to journalArticle

87 Scopus citations


Previous studies dealing with Floquet secondary stability analysis of the wakes of circular and square cross-section cylinders have shown that there are two synchronous instability modes, with long (mode A) and short (mode B) spanwise wavelengths. At intermediate wavelengths another mode arises, which reaches criticality at Reynolds numbers higher than modes A or B. Here we concentrate on these intermediate-wave number modes for the wakes of circular and square cylinders. It is found that in both cases these modes possess complex-conjugate pair Floquet multipliers, and can be combined to produce either standing or traveling waves. Both these states are quasiperiodic.

Original languageEnglish (US)
Pages (from-to)L57-L60
JournalPhysics of Fluids
Issue number8
StatePublished - Aug 2003


ASJC Scopus subject areas

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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