Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Influence of State-to-State Vibrational Distributions onTransport Coefficients of a Single Gas. / Kustova, E.V.; Kremer, G.M.
в: AIP Conference Proceedings, Том 1786, 070002, 2016.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Influence of State-to-State Vibrational Distributions onTransport Coefficients of a Single Gas
AU - Kustova, E.V.
AU - Kremer, G.M.
PY - 2016
Y1 - 2016
N2 - In this work the influence of the size of vibrationally and rotationally excited molecules on the collision integrals required for the calculation of state-to-state transport coefficients is discussed. Several diatomic molecules are considered: N2, O2, NO, H2, Cl2. It is shown that whereas the molecular size is not affected by rotational excitation, it strongly depends on the vibrational state. Particular emphasis is given to the shear viscosity and thermal conductivity coefficients calculated in the temperature range 2 500–20 000 K for equilibrium Boltzmann vibrational distributions. It is shown that under conditions of local thermal equilibrium, the effect of vibrational excitation on the shear viscosity and thermal conductivity coefficients are found to be negligible for temperatures below 5 000 K, except for the case of Cl2 molecule where at 5 000 K the effect is about 10% . For T > 10 000 K, the contribution of excited states becomes important and reaches 10–25%.
AB - In this work the influence of the size of vibrationally and rotationally excited molecules on the collision integrals required for the calculation of state-to-state transport coefficients is discussed. Several diatomic molecules are considered: N2, O2, NO, H2, Cl2. It is shown that whereas the molecular size is not affected by rotational excitation, it strongly depends on the vibrational state. Particular emphasis is given to the shear viscosity and thermal conductivity coefficients calculated in the temperature range 2 500–20 000 K for equilibrium Boltzmann vibrational distributions. It is shown that under conditions of local thermal equilibrium, the effect of vibrational excitation on the shear viscosity and thermal conductivity coefficients are found to be negligible for temperatures below 5 000 K, except for the case of Cl2 molecule where at 5 000 K the effect is about 10% . For T > 10 000 K, the contribution of excited states becomes important and reaches 10–25%.
U2 - 10.1063/1.4967578
DO - 10.1063/1.4967578
M3 - Article
VL - 1786
JO - AIP Conference Proceedings
JF - AIP Conference Proceedings
SN - 0094-243X
M1 - 070002
ER -
ID: 7595332