Absolute radical concentration measurements in low-pressure H2/O2 flames during the combustion of graphite

T. Bohm, G. Peiter, H. R. Volpp, J. Wolfrum, N. Ditzian, S. Cheskis

Research output: Contribution to conferencePaperpeer-review

Abstract

Absolute CN and CH radical concentrations were determined in situ during the combustion of a graphite substrate in premixed, laminar, low-pressure, H2/O2 flames for two different equivalence ratios, φ = 1 and φ = 1.5). For CN measurements, a small amount of NO (l.8 %) was added. The CN concentrations were three times higher for the rich flame than to the stoichiometric flame. CH concentrations were slightly higher for the stoichiometric flame than for the rich flame. The observed CH/CN concentration ratio was substantially lower compared to NO doped low-pressure CH4/O2 flames. The obtained quantitative information can serve as a first calibration point for detailed numerical simulations of the burning solid graphite, which are based on the concept of surface elementary reactions.

Original languageEnglish
Pages57
Number of pages1
StatePublished - 2004
Event30th International Symposium on Combustion, Abstracts of Symposium Papers - Chicago, IL, United States
Duration: 25 Jul 200430 Jul 2004

Conference

Conference30th International Symposium on Combustion, Abstracts of Symposium Papers
Country/TerritoryUnited States
CityChicago, IL
Period25/07/0430/07/04

Funding

FundersFunder number
Deutsche ForschungsgemeinschaftSFB 606
Israel Science Foundation574/00

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