Phase decorrelation of coherent structures in a free shear layer

Chih Ming Ho, Yitshak Zohar, Judith K. Foss

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

The vortices near the origin of an initially laminar mixing layer have a single frequency with a well-defined phase; i.e. there is little phase jitter. Further downstream, however, the phase jitter increases suddenly. Even when the flow is forced, this same transition is observed. The forcing partially loses its influence because of the decorrelation of the phase between the forcing signal and the passing coherent structures. In the present investigation, this phenomenon is documented and the physical mechanism responsible for the phase decorrelation is identified.

Original languageEnglish (US)
Pages (from-to)319-337
Number of pages19
JournalJournal of Fluid Mechanics
Volume230
DOIs
StatePublished - Sep 1991
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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