Collision Integrals of High-Temperature Air Species

Capitelli, M.; Gorse, C.; Longo, S.; Giordano, D.

doi:10.2514/2.6517

Cited by 209 publications

(96 citation statements)

References 28 publications

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“…The critical properties of the thermodynamics, chemical kinetics, and transport phenomena are provided for by electronic databases [17][18][19][20][21], as well as some approximate approaches [22,23]. Computer generated procedures and results have been used to obtain the spectral optical properties of all chemical compositions through the abinitio approach for an accurate description of the radiative processes of gases and plasmas at nonequilibrium conditions [14,15,[24][25][26][27].…”

Section: Governing Equationsmentioning

confidence: 99%

Fire ‐ II Flight Data Simulations with Different Physical ‐ Chemical Kinetics and Radiation Models

Суржиков¹,

Shang²

2016

FAE

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Two chemical kinetics models by Park, Dunn and Kang are implemented with the options of gasdynamic-radiation coupling and two nonequilibrium dissociation assumptions. A series of systematic simulations have been successfully conducted in examining these effects on the total heat transfer rates, standoff distance, and temperature profiles along the stagnation streamline. For the first time, an ab-initio quasi-classic and quantum mechanical approach is used to generate the optical properties including the radiative properties at the spectral level for atoms and ions. An increased radiative heat transfer rate of more than a factor of two is realized at trajectory points1634

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Section: Governing Equationsmentioning

confidence: 99%

Fire ‐ II Flight Data Simulations with Different Physical ‐ Chemical Kinetics and Radiation Models

Суржиков¹,

Shang²

2016

FAE

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“…The collision integrals are then calculated using the approximate formulas given in Ref. 27; as is shown in Ref. 20, for electronically excited gases these high-temperature data are more realistic compared to those provided in Ref.…”

Section: A Kinetic Theory Approachmentioning

confidence: 99%

Eucken correction in high-temperature gases with electronic excitation

Истомин

Кустова

Mekhonoshina

2014

The Journal of Chemical Physics

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A high-order numerical method to study hypersonic boundary-layer instability including high-temperature gas effects Phys. Fluids 23, 084108 (2011) In the present paper, thermal conductivity coefficient of high-temperature molecular and atomic gases with excited electronic states is studied using both the kinetic theory algorithm developed by authors earlier and the well known simple expression for the thermal conductivity coefficient proposed by Eucken and generalized by Hirschfelder. The influence of large collision diameters of excited states on the thermal conductivity is discussed. The limit of validity of the Eucken correction is evaluated on the basis of the kinetic theory calculations; an improved model suitable for air species under high-temperature conditions is proposed. © 2014 AIP Publishing LLC.

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“…The mixture diffusion coefficient for species i-th is obtained as reported in . Polynomial coefficients for ionized species have been found fitting data from (Capitelli et al 2000); the results of the fitting procedure for NO+, N+ and O+ are shown for viscosity in Fig. 2 (Baum 1965).…”

Section: Transport Modelmentioning

confidence: 99%