Cross-sections for quenching of CH A2Δ, v′ = 0 by N2 and H2O from 1740 to 2160 K

Michael W. Renfro, Krishna Kumar Venkatesan, Normand M. Laurendeau

Research output: Contribution to conferencePaperpeer-review


Measurements of time-resolved CH fluorescence were reported for 77 methane-based counter-flow diffusion flames at 1 atm. Seven oxidizer mixtures, with variations in O2/N2/Ar mole fractions, were used with each of 11 CH4/N2/Ar fuel mixtures to vary the resulting nitrogen mole fraction without altering the flame temperature. N2 quenching of CH A 2Δ, ν′ = 0 at flame temperatures was less efficient by a factor of three than the correlation of Tamura et al., which relied on extrapolation from a single measurement at 1300 K. The collision environment for the 77 diffusion flames was predicted using OPPDIF with GRI-3 kinetics and the resulting data were used to suggest improvements to the H2O thermally-averaged cross-section. The present data were consistent with a constant H2O cross-section vs. temperature as opposed to a constant quenching rate coefficient, as suggested in prior work. Original is an abstract.

Original languageEnglish
Number of pages1
StatePublished - 2002
Event29th International Symposium on Combustion - Sapporo, Japan
Duration: Jul 21 2002Jul 26 2002


Conference29th International Symposium on Combustion

ASJC Scopus subject areas

  • General Engineering


Dive into the research topics of 'Cross-sections for quenching of CH A2Δ, v′ = 0 by N2 and H2O from 1740 to 2160 K'. Together they form a unique fingerprint.

Cite this