State-resolved models of vibration-dissociation coupling in carbon dioxide

E. Kustova, I. Armenise

Research output

Abstract

The effect of various vibrational transitions on the formation of non-equilibrium distributions, rates of vibrational relaxation and chemical reactions, and fluid dynamics in CO2 flows is discussed. Several state-resolved models are applied: The most detailed model taking into account all kinds of vibrational energy exchanges and coupling of CO2 vibrational modes as well as reduced models with limited number of vibrational states and kinetic processes. It is shown that vibrational transitions between different CO2 modes and between CO2 asymmetric mode and CO molecules may significantly affect the rate of vibrational relaxation and dissociation. Whereas vibrational distributions strongly depend on the processes included to the kinetic scheme, the heat flux is practically insensitive to the vibrational kinetics and can be evaluated using simplified models.

Original languageEnglish
Title of host publication31st International Symposium on Rarefied Gas Dynamics, RGD 2018
PublisherAmerican Institute of Physics
Number of pages10
ISBN (Print)9780735418745
DOIs
Publication statusPublished - 5 Aug 2019
Event31st International Symposium on Rarefied Gas Dynamics, RGD 2018 - Glasgow
Duration: 23 Jul 201827 Jul 2018

Publication series

NameAIP Conference Proceedings
PublisherAmerican Institute of Physics
Number1
Volume2132
ISSN (Print)0094-243X

Conference

Conference31st International Symposium on Rarefied Gas Dynamics, RGD 2018
CountryUnited Kingdom
CityGlasgow
Period23/07/1827/07/18

Fingerprint

carbon dioxide
vibration
dissociation
molecular relaxation
kinetics
fluid dynamics
vibrational states
chemical reaction
heat flux
vibration mode
chemical reactions
energy transfer
energy
molecules
distribution
rate

Scopus subject areas

  • Physics and Astronomy(all)
  • Ecology

Cite this

Kustova, E., & Armenise, I. (2019). State-resolved models of vibration-dissociation coupling in carbon dioxide. In 31st International Symposium on Rarefied Gas Dynamics, RGD 2018 [150002] (AIP Conference Proceedings; Vol. 2132, No. 1). American Institute of Physics. https://doi.org/10.1063/1.5119642
Kustova, E. ; Armenise, I. / State-resolved models of vibration-dissociation coupling in carbon dioxide. 31st International Symposium on Rarefied Gas Dynamics, RGD 2018. American Institute of Physics, 2019. (AIP Conference Proceedings; 1).
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Kustova, E & Armenise, I 2019, State-resolved models of vibration-dissociation coupling in carbon dioxide. in 31st International Symposium on Rarefied Gas Dynamics, RGD 2018., 150002, AIP Conference Proceedings, no. 1, vol. 2132, American Institute of Physics, Glasgow, 23/07/18. https://doi.org/10.1063/1.5119642

State-resolved models of vibration-dissociation coupling in carbon dioxide. / Kustova, E.; Armenise, I.

31st International Symposium on Rarefied Gas Dynamics, RGD 2018. American Institute of Physics, 2019. 150002 (AIP Conference Proceedings; Vol. 2132, No. 1).

Research output

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AB - The effect of various vibrational transitions on the formation of non-equilibrium distributions, rates of vibrational relaxation and chemical reactions, and fluid dynamics in CO2 flows is discussed. Several state-resolved models are applied: The most detailed model taking into account all kinds of vibrational energy exchanges and coupling of CO2 vibrational modes as well as reduced models with limited number of vibrational states and kinetic processes. It is shown that vibrational transitions between different CO2 modes and between CO2 asymmetric mode and CO molecules may significantly affect the rate of vibrational relaxation and dissociation. Whereas vibrational distributions strongly depend on the processes included to the kinetic scheme, the heat flux is practically insensitive to the vibrational kinetics and can be evaluated using simplified models.

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Kustova E, Armenise I. State-resolved models of vibration-dissociation coupling in carbon dioxide. In 31st International Symposium on Rarefied Gas Dynamics, RGD 2018. American Institute of Physics. 2019. 150002. (AIP Conference Proceedings; 1). https://doi.org/10.1063/1.5119642