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Micronozzle Chocking under Diffusion Combustion of Hydrogen. / Kozlov, V. V.; Shmakov, A. G.; Grek, G. R. et al.

In: Doklady Physics, Vol. 63, No. 5, 01.05.2018, p. 193-198.

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

Harvard

Kozlov, VV, Shmakov, AG, Grek, GR, Kozlov, GV & Litvinenko, YA 2018, 'Micronozzle Chocking under Diffusion Combustion of Hydrogen', Doklady Physics, vol. 63, no. 5, pp. 193-198. https://doi.org/10.1134/S1028335818050026

APA

Kozlov, V. V., Shmakov, A. G., Grek, G. R., Kozlov, G. V., & Litvinenko, Y. A. (2018). Micronozzle Chocking under Diffusion Combustion of Hydrogen. Doklady Physics, 63(5), 193-198. https://doi.org/10.1134/S1028335818050026

Vancouver

Kozlov VV, Shmakov AG, Grek GR, Kozlov GV, Litvinenko YA. Micronozzle Chocking under Diffusion Combustion of Hydrogen. Doklady Physics. 2018 May 1;63(5):193-198. doi: 10.1134/S1028335818050026

Author

Kozlov, V. V. ; Shmakov, A. G. ; Grek, G. R. et al. / Micronozzle Chocking under Diffusion Combustion of Hydrogen. In: Doklady Physics. 2018 ; Vol. 63, No. 5. pp. 193-198.

BibTeX

@article{c90cc139b956450d89c4ffe0ff6e9e18,
title = "Micronozzle Chocking under Diffusion Combustion of Hydrogen",
abstract = "The results of experimental investigations of the micronozzle-chocking phenomenon under diffusion combustion of a hydrogen microjet at a high outflow velocity in the case of ignition of hydrogen near the nozzle cut are presented. It is found that the cause of micronozzle chocking is the heating of the nozzle walls from the flame-neck region retained up to transonic velocities and preventing nozzle cooling and the passage of the hydrogen jet to the supersonic-flow velocity. It is shown that hydrogen ignition far from the nozzle cut with a developed hydrogen supersonic flow into the flooded space leads to the disappearance of the flameneck region, flame detachment from the nozzle cut, and, correspondingly, termination of the nozzle heating and the possibility of the microjet coming out at the supersonic-flow velocity for the hydrogen jet. It is established that the flame-neck region is a stabilizing factor for the subsonic combustion of a hydrogen microjet up to transonic velocities. In the second case, the presence of supersonic cells stabilizes the supersonic diffusion combustion of the hydrogen microjet.",
author = "Kozlov, {V. V.} and Shmakov, {A. G.} and Grek, {G. R.} and Kozlov, {G. V.} and Litvinenko, {Yu A.}",
year = "2018",
month = may,
day = "1",
doi = "10.1134/S1028335818050026",
language = "English",
volume = "63",
pages = "193--198",
journal = "Doklady Physics",
issn = "1028-3358",
publisher = "Maik Nauka-Interperiodica Publishing",
number = "5",

}

RIS

TY - JOUR

T1 - Micronozzle Chocking under Diffusion Combustion of Hydrogen

AU - Kozlov, V. V.

AU - Shmakov, A. G.

AU - Grek, G. R.

AU - Kozlov, G. V.

AU - Litvinenko, Yu A.

PY - 2018/5/1

Y1 - 2018/5/1

N2 - The results of experimental investigations of the micronozzle-chocking phenomenon under diffusion combustion of a hydrogen microjet at a high outflow velocity in the case of ignition of hydrogen near the nozzle cut are presented. It is found that the cause of micronozzle chocking is the heating of the nozzle walls from the flame-neck region retained up to transonic velocities and preventing nozzle cooling and the passage of the hydrogen jet to the supersonic-flow velocity. It is shown that hydrogen ignition far from the nozzle cut with a developed hydrogen supersonic flow into the flooded space leads to the disappearance of the flameneck region, flame detachment from the nozzle cut, and, correspondingly, termination of the nozzle heating and the possibility of the microjet coming out at the supersonic-flow velocity for the hydrogen jet. It is established that the flame-neck region is a stabilizing factor for the subsonic combustion of a hydrogen microjet up to transonic velocities. In the second case, the presence of supersonic cells stabilizes the supersonic diffusion combustion of the hydrogen microjet.

AB - The results of experimental investigations of the micronozzle-chocking phenomenon under diffusion combustion of a hydrogen microjet at a high outflow velocity in the case of ignition of hydrogen near the nozzle cut are presented. It is found that the cause of micronozzle chocking is the heating of the nozzle walls from the flame-neck region retained up to transonic velocities and preventing nozzle cooling and the passage of the hydrogen jet to the supersonic-flow velocity. It is shown that hydrogen ignition far from the nozzle cut with a developed hydrogen supersonic flow into the flooded space leads to the disappearance of the flameneck region, flame detachment from the nozzle cut, and, correspondingly, termination of the nozzle heating and the possibility of the microjet coming out at the supersonic-flow velocity for the hydrogen jet. It is established that the flame-neck region is a stabilizing factor for the subsonic combustion of a hydrogen microjet up to transonic velocities. In the second case, the presence of supersonic cells stabilizes the supersonic diffusion combustion of the hydrogen microjet.

UR - http://www.scopus.com/inward/record.url?scp=85048625345&partnerID=8YFLogxK

U2 - 10.1134/S1028335818050026

DO - 10.1134/S1028335818050026

M3 - Article

AN - SCOPUS:85048625345

VL - 63

SP - 193

EP - 198

JO - Doklady Physics

JF - Doklady Physics

SN - 1028-3358

IS - 5

ER -

ID: 14048286