Dissipation scale and control of fine-scale turbulence in a plane mixing layer

Yitshak Zohar, H. O. Chih-Ming

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The entrainment of fluids from two streams into the shear region of an incompressible mixing layer is dominated by the evolution of large coherent structures. However, fine-scale mixing of the entrained fluids mainly occurs at the interfaces of the small-scale turbulence. In this investigation, experiments were conducted to understand the properties of the small scales and to explore a method for controlling the population of the fine-scale turbulence. Furthermore, a dissipation scale, ζ, is found from the zero-crossing of the time derivative of the velocity fluctuations. This scale characterizes the most probable size of fine-scale turbulence, which produces most of the viscous dissipation.

Original languageEnglish (US)
Pages (from-to)139-161
Number of pages23
JournalJournal of Fluid Mechanics
Volume320
StatePublished - Aug 10 1996
Externally publishedYes

Fingerprint

Turbulence
dissipation
turbulence
Fluids
Derivatives
roots of equations
fluids
entrainment
Experiments
shear

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Condensed Matter Physics

Cite this

Dissipation scale and control of fine-scale turbulence in a plane mixing layer. / Zohar, Yitshak; Chih-Ming, H. O.

In: Journal of Fluid Mechanics, Vol. 320, 10.08.1996, p. 139-161.

Research output: Contribution to journalArticle

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