Shock Tube Study of Ignition Delay Times for Hydrogen–Oxygen Mixtures

This paper presents the results of measurements of ignition delay times in hydrogen–oxygen mixtures highly diluted with argon. The experiments were carried out behind an incident shock wave at temperatures from 870 to 2500 K, pressures from 0.5 to 1.5 atm, and equivalence ratios from 0.1 to 2.0. The...

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Bibliographic Details
Published in:Fire (Basel, Switzerland) Switzerland), 2023-11, Vol.6 (11), p.435
Main Authors: Pavlov, Valery, Gerasimov, Gennady, Levashov, Vladimir, Kozlov, Pavel, Zabelinsky, Igor, Bykova, Natalia
Format: Article
Language:English
Subjects:
Argon
Combustion
Delay time
Experiments
Hydrogen
hydrogen–oxygen mixture
Ignition
ignition delay time
incident shock wave
Mixtures
Oxygen
Partial pressure
Sensors
shock tube
Shock waves
Temperature
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Summary:This paper presents the results of measurements of ignition delay times in hydrogen–oxygen mixtures highly diluted with argon. The experiments were carried out behind an incident shock wave at temperatures from 870 to 2500 K, pressures from 0.5 to 1.5 atm, and equivalence ratios from 0.1 to 2.0. The results obtained were processed in terms of the partial pressure of the combustible mixture stoichiometric part that is consumed in the combustion process. An almost linear dependence of the ignition delay time on the reciprocal value of the partial pressure was found for both rich and lean mixtures. The measured data are compared with calculations based on the previously developed kinetic model and experimental data from other authors.
ISSN:2571-6255
2571-6255
DOI:10.3390/fire6110435