Assessment of recent thermo-chemical relaxation models using the DLR-TAU code

G. P. Oblapenko, E. V. Kustova, K. Hannemann, V. Hannemann

Research output

Abstract

A recently developed model of vibrational relaxation is applied to the study of strongly non-equilibrium flows of nitrogen and air. The model is implemented in the DLR-TAU solver and assessed in a wide range of conditions. Also implemented is a modification of the Treanor-Marrone model for non-equilibrium dissociation, along with Arrhenius law-style fits for the equilibrium rates obtained from quasi-classical trajectory simulations. Results of computations show that the new models give better agreement with experimental data than the widely used combination of the Landau-Teller and Park models.

Original languageEnglish
Title of host publication31st International Symposium on Rarefied Gas Dynamics, RGD 2018
PublisherAmerican Institute of Physics
Number of pages8
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

molecular relaxation
nonequilibrium flow
trajectories
dissociation
nitrogen
air
simulation

Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Oblapenko, G. P., Kustova, E. V., Hannemann, K., & Hannemann, V. (2019). Assessment of recent thermo-chemical relaxation models using the DLR-TAU code. In 31st International Symposium on Rarefied Gas Dynamics, RGD 2018 [140006] (AIP Conference Proceedings; Vol. 2132, No. 1). American Institute of Physics. https://doi.org/10.1063/1.5119640
Oblapenko, G. P. ; Kustova, E. V. ; Hannemann, K. ; Hannemann, V. / Assessment of recent thermo-chemical relaxation models using the DLR-TAU code. 31st International Symposium on Rarefied Gas Dynamics, RGD 2018. American Institute of Physics, 2019. (AIP Conference Proceedings; 1).
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Oblapenko, GP, Kustova, EV, Hannemann, K & Hannemann, V 2019, Assessment of recent thermo-chemical relaxation models using the DLR-TAU code. in 31st International Symposium on Rarefied Gas Dynamics, RGD 2018., 140006, AIP Conference Proceedings, no. 1, vol. 2132, American Institute of Physics, Glasgow, 23/07/18. https://doi.org/10.1063/1.5119640

Assessment of recent thermo-chemical relaxation models using the DLR-TAU code. / Oblapenko, G. P.; Kustova, E. V.; Hannemann, K.; Hannemann, V.

31st International Symposium on Rarefied Gas Dynamics, RGD 2018. American Institute of Physics, 2019. 140006 (AIP Conference Proceedings; Vol. 2132, No. 1).

Research output

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AU - Hannemann, K.

AU - Hannemann, V.

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Y1 - 2019/8/5

N2 - A recently developed model of vibrational relaxation is applied to the study of strongly non-equilibrium flows of nitrogen and air. The model is implemented in the DLR-TAU solver and assessed in a wide range of conditions. Also implemented is a modification of the Treanor-Marrone model for non-equilibrium dissociation, along with Arrhenius law-style fits for the equilibrium rates obtained from quasi-classical trajectory simulations. Results of computations show that the new models give better agreement with experimental data than the widely used combination of the Landau-Teller and Park models.

AB - A recently developed model of vibrational relaxation is applied to the study of strongly non-equilibrium flows of nitrogen and air. The model is implemented in the DLR-TAU solver and assessed in a wide range of conditions. Also implemented is a modification of the Treanor-Marrone model for non-equilibrium dissociation, along with Arrhenius law-style fits for the equilibrium rates obtained from quasi-classical trajectory simulations. Results of computations show that the new models give better agreement with experimental data than the widely used combination of the Landau-Teller and Park models.

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Oblapenko GP, Kustova EV, Hannemann K, Hannemann V. Assessment of recent thermo-chemical relaxation models using the DLR-TAU code. In 31st International Symposium on Rarefied Gas Dynamics, RGD 2018. American Institute of Physics. 2019. 140006. (AIP Conference Proceedings; 1). https://doi.org/10.1063/1.5119640