Visualization of concentration field in a vortex ring using acetone PLIF

H. J. Choi, Y. S. Ko, Suk Ho Chung

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

To improve the understanding of flame propagation through a nonpremixed vortex ring, the characteristics of fuel concentration in a vortex ring have been investigated experimentally. The vortex ring was generated by the ejection of propane with a single stroke motion of a speaker. Planar laserinduced fluorescence (PLIF) technique was adopted by seeding acetone as a tracer to fuel stream, in which the PLIF signal intensity is directly proportional to the concentration of acetone. This technique provides non-intrusive and instantaneous measurement of concentration field. Results showed that fuel concentration and its gradient decreased with the evolution of a vortex ring. When a nonpremixed flame propagated through a vortex ring, the flame location coincides with the inner most spiral mixing layer of fuel and air in a vortex ring.

Original languageEnglish (US)
Pages (from-to)145-152
Number of pages8
JournalJournal of Visualization
Volume5
Issue number2
DOIs
StatePublished - Jan 1 2002

Keywords

  • Acetone PLIF
  • Flame propagation
  • Nonpremixed flame
  • Vortex ring

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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