Flame stretch measurements during the interaction of premixed flames and Kármán vortex streets using PIV

D. A. Nye, J. G. Lee, T. W. Lee, D. A. Santavicca

Research output: Contribution to journalArticle

40 Scopus citations


Flame stretch measurements in a premixed, lean methane-air, V-flame interacting with a Kármán vortex street have been made using a particle image velocimeter. The flame curvature and strain rate along the flame have been measured over the range of -2.0-1.0 mm-1 and -175-175 s-1, respectively, which corresponds to a range of flame stretch from -475-200 s-1. Results indicate that the curvature and strain rate are statistically independent. Flame stretch statistics based on individual flames are also considered since each flame represents a particular phase within the regular and periodic interaction cycle studied. These results indicate that for a particular flame the average stretch rate becomes independent of the average flame strain rate. A comparison among PIV measurements, OH planar laser-induced fluorescence (OH-PLIF) measurements, and numerical simulation reveals similar flame stretch statistics. Qualitative measurements concerning flame shape and the relative location of vortices within the reactant flow are also discussed.

Original languageEnglish (US)
Pages (from-to)167-179
Number of pages13
JournalCombustion and Flame
Issue number1-2
StatePublished - Apr 1996


ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

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