The dynamics of coherent structures in a flat-plate boundary layer

D. Rempfer, H. Fasel

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

From the data of a direct numerical simulation the three-dimensional coherent structures of an incompressible, spatially evolving flat-plate boundary layer have been calculated using the POD method. By Galerkin projection of the Navier-Stokes equations onto the corresponding system of eigenfunctions then a low-dimensional model of the flow in the form of a system of ODE's has been derived. In a region of the boundary layer just beyond the spike stages of transition this system displays deterministic chaos that has been quantified by determining its Lyapunov exponents.

Original languageEnglish (US)
Pages (from-to)73-77
Number of pages5
JournalApplied Scientific Research
Volume51
Issue number1-2
DOIs
StatePublished - Jun 1 1993

Keywords

  • chaos
  • coherent structures
  • dynamical systems

ASJC Scopus subject areas

  • Engineering(all)

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