Hydrogen Micro Jet Diffusion Combustion in a Coaxial Air Jet

In this paper the results of experimental studies of the combustion of a round microjet of hydrogen in a ring subsonic coaxial air jet are presented. It is shown that the combustion scenario for a subsonic hydrogen jet outflow is associated with the presence of a “bottleneck flame region” and nozzle...

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Bibliographic Details
Published in:Doklady. a journal of the Russian Academy of Sciences. Physics 2021, Vol.66 (1), p.1-4
Main Authors: Kozlov, V. V., Grek, G. R., Litvinenko, M. V., Litvinenko, Yu. A., Tambovzev, A. S., Shmakov, A. G.
Format: Article
Language:English
Subjects:
Air jets
Classical Mechanics
Combustion
Hydrogen
Mathematical and Computational Physics
Microjets
Nozzles
Outflow
Physics
Physics and Astronomy
Theoretical
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Summary:In this paper the results of experimental studies of the combustion of a round microjet of hydrogen in a ring subsonic coaxial air jet are presented. It is shown that the combustion scenario for a subsonic hydrogen jet outflow is associated with the presence of a “bottleneck flame region” and nozzle heating, but the initial spherical shape of the flame region is transformed into a cylindrical one. It was found that the combustion of a round microjet of hydrogen in a satellite ring coaxial air jet at a supersonic outflow velocity is accompanied by the presence of supersonic cells.
ISSN:1028-3358
1562-6903
DOI:10.1134/S1028335820110051