Eucken correction in high-temperature gases with electronic excitation

Journal Article · Wed May 14 00:00:00 EDT 2014 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.4874257· OSTI ID:22252860

Istomin, V. A.; Mekhonoshina, M. A. ^[1]

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1. Saint Petersburg State University, 28 Universitetsky pr., 198504 Saint Petersburg (Russian Federation)

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.

• OSTI ID: 22252860
• Journal Information: Journal of Chemical Physics, Vol. 140, Issue 18; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COLLISIONS
EXCITATION
EXCITED STATES
TEMPERATURE RANGE 0400-1000 K
THERMAL CONDUCTIVITY