Study of the Regimes of Diffusive Combustion of a Hydrogen Microjet
https://doi.org/10.25205/2541-9447-2022-17-3-12-21
Abstract
The paper presents the results of experimental studies of scenarios of diffusion combustion of a microjet of hydrogen flowing out of a cylindrical micronozzle with a diameter of 200 μm. The hydrogen microjet is ignited near the nozzle exit and at a distance. The experimental data are compared with the data previously obtained, and the results are expressed in dimensionless parameters (in terms of Reynolds numbers). It is established that the stabilization of flame during the outflow of a circular micro jet of hydrogen is associated with the presence of heating of the nozzle by a spherical flame region covering the nozzle section. The hysteresis of the diffusion combustion process of circular hydrogen microjets is shown depending on the ignition location of the microjet (near or far from the nozzle exit) and the change in the flow rate (growth or decrease).
Supporting agencies: This research was supported by the Russian Science Foundation (RSF) project No. 22-19-00151, https://rscf.ru/22-19-00151/.
About the Authors
V. V. Kozlov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS; Novosibirsk State University
Russian Federation
Russian Federation
Viktor V. Kozlov, Doctor of Science (Physics and Mathematics), Professor, Principal Researcher; Professor
4/1 Institutskaya Str., Novosibirsk, 630090
2 Pirogov Str., Novosibirsk, 630090
M. V. Litvinenko
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS; Novosibirsk State University
Russian Federation
Russian Federation
Maria V. Litvinenko, Doctor of Science (Physics and Mathematics), Senior Researcher; Scientific Secretary Faculty of Physics
4/1 Institutskaya Str., Novosibirsk, 630090
2 Pirogov Str., Novosibirsk, 630090
Yu. А. Litvinenko
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Russian Federation
Russian Federation
Yuriy A. Litvinenko, Doctor of Science (Physics and Mathematics), Senior Scientist
4/1 Institutskaya Str., Novosibirsk, 630090
A. S. Tambovtsev
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Russian Federation
Russian Federation
Alexander S. Tambovtsev, Junior Scientist
4/1 Institutskaya Str., Novosibirsk, 630090
A. G. Shmakov
Voevodsky Institute of Chemical Kinetics and Combustion SB RAS; Siberian State University of Geosystem and Technology
Russian Federation
Russian Federation
Andrey G. Shmakov, Doctor of Science (Chemistry), Senior Scientist; Assistant Professor
3 Institutskaya Str., Novosibirsk, 630090
10 Plakhotny Str., Novosibirsk, 630108
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Review
For citations:
Kozlov V.V., Litvinenko M.V., Litvinenko Yu.А., Tambovtsev A.S., Shmakov A.G. Study of the Regimes of Diffusive Combustion of a Hydrogen Microjet. SIBERIAN JOURNAL OF PHYSICS. 2022;17(3):12-21. (In Russ.) https://doi.org/10.25205/2541-9447-2022-17-3-12-21
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