An experimental investigation of coaxial turbulent jets

F. H. Champagne, Israel J Wygnanski

Research output: Contribution to journalArticle

119 Citations (Scopus)

Abstract

The flow field generated by two coaxial jets was investigated experimentally with hot-wire anemometers. The area ratio between the external and internal nozzle was varied as well as the velocity issuing from each of the nozzles. The distribution of the mean velocities, turbulence intensities, and shear stresses were determined for the various cases. The development of the flow field and its approach to a self-preserving state is discussed. The Reynolds numbers based on the nozzle diameters varied from 0 to 10s and the velocities were low enough that the flow can be considered incompressible.

Original languageEnglish (US)
Pages (from-to)1445-1464
Number of pages20
JournalInternational Journal of Heat and Mass Transfer
Volume14
Issue number9
DOIs
StatePublished - 1971
Externally publishedYes

Fingerprint

turbulent jets
nozzles
Nozzles
Flow fields
flow distribution
hot-wire anemometers
Anemometers
preserving
shear stress
low speed
Shear stress
Reynolds number
Turbulence
turbulence
Wire

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Energy(all)
  • Mechanical Engineering

Cite this

An experimental investigation of coaxial turbulent jets. / Champagne, F. H.; Wygnanski, Israel J.

In: International Journal of Heat and Mass Transfer, Vol. 14, No. 9, 1971, p. 1445-1464.

Research output: Contribution to journalArticle

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