An experimental investigation of coaxial turbulent jets

F. H. Champagne, I. J. Wygnanski

Research output: Contribution to journalArticlepeer-review


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
Pages (from-to)1445-1464
Number of pages20
JournalInternational Journal of Heat and Mass Transfer
Issue number9
StatePublished - Sep 1971
Externally publishedYes


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