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Experimental study on diffusion combustion of high-speed hydrogen round microjets. / Kozlov, V. V.; Grek, G. R.; Kozlov, G. V. et al.

In: International Journal of Hydrogen Energy, Vol. 44, No. 1, 01.01.2019, p. 457-468.

Research output: Contribution to journal › Article › peer-review

Harvard

Kozlov, VV, Grek, GR, Kozlov, GV, Litvinenko, YA & Shmakov, AG 2019, 'Experimental study on diffusion combustion of high-speed hydrogen round microjets', International Journal of Hydrogen Energy, vol. 44, no. 1, pp. 457-468. https://doi.org/10.1016/j.ijhydene.2018.03.002

APA

Kozlov, V. V., Grek, G. R., Kozlov, G. V., Litvinenko, Y. A., & Shmakov, A. G. (2019). Experimental study on diffusion combustion of high-speed hydrogen round microjets. International Journal of Hydrogen Energy, 44(1), 457-468. https://doi.org/10.1016/j.ijhydene.2018.03.002

Vancouver

Kozlov VV, Grek GR, Kozlov GV, Litvinenko YA, Shmakov AG. Experimental study on diffusion combustion of high-speed hydrogen round microjets. International Journal of Hydrogen Energy. 2019 Jan 1;44(1):457-468. doi: 10.1016/j.ijhydene.2018.03.002

Author

Kozlov, V. V. ; Grek, G. R. ; Kozlov, G. V. et al. / Experimental study on diffusion combustion of high-speed hydrogen round microjets. In: International Journal of Hydrogen Energy. 2019 ; Vol. 44, No. 1. pp. 457-468.

BibTeX

@article{a305d666b99a4168851b2e3a21425cb1,
title = "Experimental study on diffusion combustion of high-speed hydrogen round microjets",
abstract = "Experimental data on the phenomenon of nozzle choking at diffusion combustion of a high-speed hydrogen microjet at its ignition close to the nozzle are presented. As is found, such a phenomenon is due to the nozzle heating by the «bottleneck flame region» which is generated at the origin of microjet. This flow region persists up to transonic velocities of the microjet preventing from cooling of the nozzle and the transition to supersonic speed. In the case of hydrogen ignition far from the nozzle exit in supersonic conditions, the «bottleneck flame region» is suppressed, the flame becomes detached from the nozzle which is no longer heated so that the supersonic range is attained. The subsonic combustion of hydrogen microjet is stabilized by the «bottleneck flame region» while the supersonic one becomes more stable at the generation of shock cells. The results of the present study provide new details on the combustion of hydrogen microjets and could by useful for the operation of different burners.",
keywords = "Diffusion combustion, Heating of a nozzle, Round hydrogen microjet, Thick-walled micronozzle, «flame bottleneck» region, << flame bottleneck >> region",
author = "Kozlov, {V. V.} and Grek, {G. R.} and Kozlov, {G. V.} and Litvinenko, {Yu A.} and Shmakov, {A. G.}",
year = "2019",
month = jan,
day = "1",
doi = "10.1016/j.ijhydene.2018.03.002",
language = "English",
volume = "44",
pages = "457--468",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
publisher = "Elsevier Ltd",
number = "1",

}

RIS

TY - JOUR

T1 - Experimental study on diffusion combustion of high-speed hydrogen round microjets

AU - Kozlov, V. V.

AU - Grek, G. R.

AU - Kozlov, G. V.

AU - Litvinenko, Yu A.

AU - Shmakov, A. G.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Experimental data on the phenomenon of nozzle choking at diffusion combustion of a high-speed hydrogen microjet at its ignition close to the nozzle are presented. As is found, such a phenomenon is due to the nozzle heating by the «bottleneck flame region» which is generated at the origin of microjet. This flow region persists up to transonic velocities of the microjet preventing from cooling of the nozzle and the transition to supersonic speed. In the case of hydrogen ignition far from the nozzle exit in supersonic conditions, the «bottleneck flame region» is suppressed, the flame becomes detached from the nozzle which is no longer heated so that the supersonic range is attained. The subsonic combustion of hydrogen microjet is stabilized by the «bottleneck flame region» while the supersonic one becomes more stable at the generation of shock cells. The results of the present study provide new details on the combustion of hydrogen microjets and could by useful for the operation of different burners.

AB - Experimental data on the phenomenon of nozzle choking at diffusion combustion of a high-speed hydrogen microjet at its ignition close to the nozzle are presented. As is found, such a phenomenon is due to the nozzle heating by the «bottleneck flame region» which is generated at the origin of microjet. This flow region persists up to transonic velocities of the microjet preventing from cooling of the nozzle and the transition to supersonic speed. In the case of hydrogen ignition far from the nozzle exit in supersonic conditions, the «bottleneck flame region» is suppressed, the flame becomes detached from the nozzle which is no longer heated so that the supersonic range is attained. The subsonic combustion of hydrogen microjet is stabilized by the «bottleneck flame region» while the supersonic one becomes more stable at the generation of shock cells. The results of the present study provide new details on the combustion of hydrogen microjets and could by useful for the operation of different burners.

KW - Diffusion combustion

KW - Heating of a nozzle

KW - Round hydrogen microjet

KW - Thick-walled micronozzle

KW - «flame bottleneck» region

KW - << flame bottleneck >> region

UR - http://www.scopus.com/inward/record.url?scp=85044319161&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2018.03.002

DO - 10.1016/j.ijhydene.2018.03.002

M3 - Article

AN - SCOPUS:85044319161

VL - 44

SP - 457

EP - 468

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 1

ER -

ID: 12175860