Thermochemical Nonequilibrium Parameter Modification of Oxygen for a Two-temperature Model

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Thermochemical nonequilibrium parameters of oxygen, O-2, for a two-temperature model are proposed in the present work. The rovibrational nonequilibrium and chemical reactions of three low-lying electronic states of O-2(X-3 Sigma(-)(g), a(1)Delta(g), and b(1)Sigma(+)(g)) are investigated in one-dimensional post-shock flow environments, including the rovibrational state-to-state kinetics and electronic excitations due to heavy-particle collisions. Based on the results of rigorous state-resolved calculations and state-of-the-art shock-tube experimental data, the nonequilibrium parameters of O-2 are proposed to improve the two-temperature model accuracy. For shock wave velocities above 3 km/s, the proposed nonequilibrium parameters of the two-temperature model better reproduce the results of the rigorous state-resolved calculations and shock-tube experimental data than do the previous parameters. Published by AIP Publishing.
Publisher
AMER INST PHYSICS
Issue Date
2018-01
Language
English
Article Type
Article
Keywords

VIBRATIONAL-RELAXATION; SHOCK-WAVES; O2 DISSOCIATION; RATES; STATE; TEMPERATURES; MIXTURES; NITROGEN; GASES; ARGON

Citation

PHYSICS OF FLUIDS, v.30, no.016101, pp.1 - 19

ISSN
1070-6631
DOI
10.1063/1.4996799
URI
http://hdl.handle.net/10203/240405
Appears in Collection
AE-Journal Papers(저널논문)
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