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Preliminary numerical study of three-temperature model investigation of hypersonic oxygen flow under rotational nonequilibrium

Authors
  • Ghezali, Y.1
  • Haoui, R.1
  • Chpoun, A.2
  • 1 University of Sciences and Technology Houari Boumediene, Algiers, Algeria , Algiers (Algeria)
  • 2 University of Evry Paris-Saclay, Evry, France , Evry (France)
Type
Published Article
Journal
Thermophysics and Aeromechanics
Publisher
Kutateladze Institute of Thermophysics SB RAS
Publication Date
Nov 01, 2020
Volume
27
Issue
6
Pages
869–872
Identifiers
DOI: 10.1134/S0869864320060086
Source
Springer Nature
Keywords
License
Yellow

Abstract

The effect of rotational nonequilibrium on the macroscopic parameters of the flow behind a normal shock wave in oxygen gas flow has been examined. The electron thermal equilibrium was taken into account where the electron temperature was equal to the vibrational temperature according to Park’s assumption. Therefore, only the effect of rotational nonequilibrium on the translational and vibrational temperature was analyzed. Rotational and vibrational relaxation time for the O2-O2 and O2-O collisions proposed recently by Andrienko and Boyd are used. Also, the O2 dissociation rates proposed by Kim and Park are used. The results obtained with the three-temperature model well reproduce the data obtained in shock tube for the shock velocity of 4.44 km/s.

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