Transport coefficients in high-temperature ionized air flows with electronic excitation

被引:8
|
作者
Istomin, V. A. [1 ]
Oblapenko, G. P. [1 ]
机构
[1] St Petersburg State Univ, 7-9 Univ Skaya Nab, St Petersburg 199034, Russia
基金
俄罗斯科学基金会;
关键词
NITROGEN; OXYGEN; MIXTURES; PLASMAS; ARGON;
D O I
10.1063/1.5017167
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Transport coefficients are studied in high-temperature ionized air mixtures using the modified Chapman-Enskog method. The 11-component mixture N-2/N-2(+)/N/N+O2/O-2(+)/O/O+/NO/NO+/e(-), taking into account the rotational and vibrational degrees of freedom of molecules and electronic degrees of freedom of both atomic and molecular species, is considered. Using the PAINeT software package, developed by the authors of the paper, in wide temperature range calculations of the thermal conductivity, thermal diffusion, diffusion, and shear viscosity coefficients for an equilibrium ionized air mixture and non-equilibrium flow conditions for mixture compositions, characteristic of those in shock tube experiments and re-entry conditions, are performed. For the equilibrium air case, the computed transport coefficients are compared to those obtained using simplified kinetic theory algorithms. It is shown that neglecting electronic excitation leads to a significant underestimation of the thermal conductivity coefficient at temperatures higher than 25 000 K. For non-equilibrium test cases, it is shown that the thermal diffusion coefficients of neutral species and the self-diffusion coefficients of all species are strongly affected by the mixture composition, while the thermal conductivity coefficient is most strongly influenced by the degree of ionization of the flow. Neglecting electronic excitation causes noticeable underestimation of the thermal conductivity coefficient at temperatures higher than 20 000 K. Published by AIP Publishing.
引用
收藏
页数:10
相关论文
共 50 条
  • [41] ELECTRONIC CERAMICS IN HIGH-TEMPERATURE ENVIRONMENTS
    SEARCY, AW
    [J]. AMERICAN CERAMIC SOCIETY BULLETIN, 1980, 59 (08): : 830 - 830
  • [42] Electronic structure of high-temperature ZrOCz
    Ivanovskii, AL
    Okatov, SV
    Shveikin, GP
    [J]. INORGANIC MATERIALS, 2000, 36 (11) : 1121 - 1124
  • [44] ELECTRONIC CERAMICS IN HIGH-TEMPERATURE ENVIRONMENTS
    SEARCY, AW
    MESCHI, DJ
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1982, 65 (04) : 216 - 218
  • [45] ELECTRONIC POTENTIALITIES OF HIGH-TEMPERATURE SUPERCONDUCTORS
    CARDWELL, DA
    [J]. IEE REVIEW, 1989, 35 (02): : 57 - 60
  • [46] Transport Properties of Five-Component Nitrogen and Oxygen Ionized Mixtures with Electronic Excitation
    Istomin, V. A.
    Kustova, E. V.
    [J]. 28TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS 2012, VOLS. 1 AND 2, 2012, 1501 : 168 - 174
  • [47] HIGH-TEMPERATURE CONVECTIVE AIR HEATER
    COVEY, JH
    [J]. JOURNAL OF ENVIRONMENTAL SCIENCES, 1970, 13 (02): : 28 - &
  • [48] Ultrafast high-temperature heating in air
    Liang, Yihan
    Xiang, Siqi
    Zhang, Xinfang
    [J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2022, 42 (09) : 4030 - 4039
  • [49] HIGH-TEMPERATURE HEATING OF AIR IN BOILERS
    FOMINA, VN
    ARTEMEV, YP
    TITOVA, EY
    [J]. THERMAL ENGINEERING, 1988, 35 (09) : 497 - 501
  • [50] High-temperature oxidation of Permalloy in air
    Salou, M.
    Rioual, S.
    Lescop, B.
    Calvez, B.
    Nguyen-Vien, G.
    Rouvellou, B.
    [J]. CORROSION SCIENCE, 2009, 51 (04) : 703 - 706