Hydroxyl time-scale measurements in turbulent counter-flow flames

K. Venkatesan, G. B. King, N. M. Laurendeau, M. W. Renfro, S. K. Omar, A. Ludwig, D. Geyer, A. Dreizler, J. Janicka

Research output: Contribution to conferencePaperpeer-review

Abstract

Time-series measurements of OH concentrations were obtained for a set of turbulent counter-flow nonpremixed H2/CH4/air flames. The normalized PSD collapsed at lower frequencies, which dominated the integral time scale, but displayed residual variations at higher frequencies. The near complete collapse of the two-time statistics indicated that the integral time scale is a good representation of hydroxyl fluctuations in these counter-flow nonpremixed flames. The integral time scale depended on the combined Re and strain rate (SR) approximately as Re-L35 in counter-flow nonpremixed flames. Time-series measurements of OH concentrations were also obtained for a set of turbulent counter-flow partially premixed CH4/air flames. The effect of variations in Reynolds number and equivalence ratio on the fluctuation statistics was studied. This is an abstract of a paper presented at the 30th International Symposium on combustion (Chicago, IL 7/25-30/2004).

Original languageEnglish
Pages449
Number of pages1
StatePublished - 2004
Event30th International Symposium on Combustion, Abstracts of Works-in-Progress Poster Presentations - Chicago, IL, United States
Duration: Jul 25 2004Jul 30 2004

Conference

Conference30th International Symposium on Combustion, Abstracts of Works-in-Progress Poster Presentations
Country/TerritoryUnited States
CityChicago, IL
Period7/25/047/30/04

ASJC Scopus subject areas

  • Engineering (all)

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