The forced mixing layer between parallel streams

D. Oster, I. Wygnanski

Research output: Contribution to journalArticlepeer-review

535 Scopus citations


The effect of periodic two-dimensional excitation on the development of a turbulent mixing region was studied experimentally. Controlled oscillations of variable amplitude and frequency were applied at the initiation of mixing between two parallel air streams. The frequency of forcing was at least an order of magnitude lower than the initial instability frequency of the flow in order to test its effect far downstream. The effect of the velocity difference between the streams was also investigated in this experiment. A typical Reynolds number based on the velocity difference and the momentum thickness of the shear layer was 104.

Original languageEnglish (US)
Pages (from-to)91-130
Number of pages40
JournalJournal of Fluid Mechanics
StatePublished - Oct 1982

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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