Swirl effect on flow structure and mixing in a turbulent jet

Z. D. Kravtsov, D. K. Sharaborin, V. M. Dulin

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

The paper reports on experimental study of turbulent transport in the initial region of swirling turbulent jets. The particle image velocimetry and planar laser-induced fluorescence techniques are used to investigate the flow structure and passive scalar concentration, respectively, in free air jet with acetone vapor. Three flow cases are considered, viz., non-swirling jets and swirling jets with and without vortex breakdown and central recirculation zone. Without vortex breakdown, the swirl is shown to promote jet mixing with surrounding air and to decrease the jet core length. The vortex core breakdown further enhances mixing as the jet core disintegrates at the nozzle exit.

Original languageEnglish
Article number012001
Number of pages5
JournalJournal of Physics: Conference Series
Volume980
Issue number1
DOIs
Publication statusPublished - 19 Mar 2018

Keywords

  • VORTEX BREAKDOWN

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