Turbulent dissipation rates and the random occurrence of coherent events

Alan C. Newell, David A. Rand, David Russell

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

In this Letter, we suggest that the transport properties and dissipation rates of a wide class of turbulent flows are determined by the random occurrence of coherent events that correspond to certain orbits which we call homoclinic excursions in the high dimensional strange attractor. Homoclinic excursions are trajectories in the non-compact phase space that are attracted to special orbits which connect saddle points in the finite region of phase space to infinity and represent coherent structures in the flow field.

Original languageEnglish (US)
Pages (from-to)112-123
Number of pages12
JournalPhysics Letters A
Volume132
Issue number2-3
DOIs
StatePublished - Sep 26 1988

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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