The coupling between scales in shear flows

Promode R. Bandyopadhyay, Fazle Hussain

Research output: Contribution to journalArticle

98 Scopus citations

Abstract

In order to explore the relationship between the large- and small-scale motions in turbulent shear flows, a number of flows have been studied based on short-time correlation measurements. The shear flows investigated are boundary layers, plane and axisymmetric mixing layers, plane wakes and the far fields of plane and circular jets. The coupling between the scales has been obtained by correlating the low-frequency component of the u-velocity signal with a signal that is similar to the envelope of the high-frequency part of the velocity signal. The coupling is found to be significant in all flows. Phase reversal across the shear region is found to occur in the boundary layers and mixing layers only.

Original languageEnglish (US)
Pages (from-to)2221-2228
Number of pages8
JournalPhysics of Fluids
Volume27
Issue number9
DOIs
StatePublished - Jan 1 1984

ASJC Scopus subject areas

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

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