Standard

Non-equilibrium dissociation and relaxation behind the shock wave within two-temperature approach. / Gorbachev, Yuriy; Kunova, Olga; Shoev, Georgy; Bondar, Yevgeniy.

In: Journal of Physics: Conference Series, Vol. 1959, No. 1, 012021, 14.07.2021.

Research output: Contribution to journal › Conference article › peer-review

Harvard

Gorbachev, Y, Kunova, O, Shoev, G & Bondar, Y 2021, 'Non-equilibrium dissociation and relaxation behind the shock wave within two-temperature approach', Journal of Physics: Conference Series, vol. 1959, no. 1, 012021. https://doi.org/10.1088/1742-6596/1959/1/012021

APA

Gorbachev, Y., Kunova, O., Shoev, G., & Bondar, Y. (2021). Non-equilibrium dissociation and relaxation behind the shock wave within two-temperature approach. Journal of Physics: Conference Series, 1959(1), [012021]. https://doi.org/10.1088/1742-6596/1959/1/012021

Vancouver

Gorbachev Y, Kunova O, Shoev G, Bondar Y. Non-equilibrium dissociation and relaxation behind the shock wave within two-temperature approach. Journal of Physics: Conference Series. 2021 Jul 14;1959(1). 012021. https://doi.org/10.1088/1742-6596/1959/1/012021

Author

Gorbachev, Yuriy ; Kunova, Olga ; Shoev, Georgy ; Bondar, Yevgeniy. / Non-equilibrium dissociation and relaxation behind the shock wave within two-temperature approach. In: Journal of Physics: Conference Series. 2021 ; Vol. 1959, No. 1.

BibTeX

@article{dafb709d33dc496bb02df68edb70dbe1,
title = "Non-equilibrium dissociation and relaxation behind the shock wave within two-temperature approach",
abstract = "Within the recently proposed asymptotic method for solving the Boltzmann equation for chemically reacting gas mixture, the equations for a dissociating diatomic gas have been derived assuming two-temperature (translational-rotational + vibrational) approximation. Corresponding expressions for the reaction and relaxation rates, determined by the quasi-stationary vibrational distributions, have been obtained under assumption of dissociation from the highest vibrational level. Cut-off harmonic oscillator approximation for the diatomic molecules is assumed. It is shown that all reaction rates are the complex functions of the species densities. Analysis of a flow behind a shock wave is performed in a wide range of the flow parameters. It is shown that under strong non-equilibrium condition the dissociation rate is determined not by the dissociation probability, but by the vibration probability, since the excitation of highest vibrational levels is the bottleneck of dissociation process. This means that the procedure of obtaining the data on dissociation rates needs the accurate revision.",
author = "Yuriy Gorbachev and Olga Kunova and Georgy Shoev and Yevgeniy Bondar",
note = "Publisher Copyright: {\textcopyright} 2021 Published under licence by IOP Publishing Ltd.; null ; Conference date: 09-03-2021 Through 12-03-2021",
year = "2021",
month = jul,
day = "14",
doi = "10.1088/1742-6596/1959/1/012021",
language = "English",
volume = "1959",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",
number = "1",
url = "https://events.spbu.ru/events/polyakhov-2021",

}

RIS

TY - JOUR

T1 - Non-equilibrium dissociation and relaxation behind the shock wave within two-temperature approach

AU - Gorbachev, Yuriy

AU - Kunova, Olga

AU - Shoev, Georgy

AU - Bondar, Yevgeniy

N1 - Conference code: IX

PY - 2021/7/14

Y1 - 2021/7/14

N2 - Within the recently proposed asymptotic method for solving the Boltzmann equation for chemically reacting gas mixture, the equations for a dissociating diatomic gas have been derived assuming two-temperature (translational-rotational + vibrational) approximation. Corresponding expressions for the reaction and relaxation rates, determined by the quasi-stationary vibrational distributions, have been obtained under assumption of dissociation from the highest vibrational level. Cut-off harmonic oscillator approximation for the diatomic molecules is assumed. It is shown that all reaction rates are the complex functions of the species densities. Analysis of a flow behind a shock wave is performed in a wide range of the flow parameters. It is shown that under strong non-equilibrium condition the dissociation rate is determined not by the dissociation probability, but by the vibration probability, since the excitation of highest vibrational levels is the bottleneck of dissociation process. This means that the procedure of obtaining the data on dissociation rates needs the accurate revision.

AB - Within the recently proposed asymptotic method for solving the Boltzmann equation for chemically reacting gas mixture, the equations for a dissociating diatomic gas have been derived assuming two-temperature (translational-rotational + vibrational) approximation. Corresponding expressions for the reaction and relaxation rates, determined by the quasi-stationary vibrational distributions, have been obtained under assumption of dissociation from the highest vibrational level. Cut-off harmonic oscillator approximation for the diatomic molecules is assumed. It is shown that all reaction rates are the complex functions of the species densities. Analysis of a flow behind a shock wave is performed in a wide range of the flow parameters. It is shown that under strong non-equilibrium condition the dissociation rate is determined not by the dissociation probability, but by the vibration probability, since the excitation of highest vibrational levels is the bottleneck of dissociation process. This means that the procedure of obtaining the data on dissociation rates needs the accurate revision.

UR - http://www.scopus.com/inward/record.url?scp=85111954708&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/6e6dc9d8-faed-3f7e-934f-6207736fa82e/

U2 - 10.1088/1742-6596/1959/1/012021

DO - 10.1088/1742-6596/1959/1/012021

M3 - Conference article

VL - 1959

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012021

Y2 - 9 March 2021 through 12 March 2021

ER -

ID: 84290893