Coupled radiative and vibrational nonequilibrium in a diatomic gas, with application to gas dynamics

On the coupling of non-LTE radiation with a rarefied diatomic gas

“…Gilles and Vincenti [10] a[ssumed the rotational modes to be in equilibrium at the tr~insl:atlonal temperature …”

“…Kinetic models of the BGK-type [-5] have, recently, been proposed by Phillips and Arpaci [6], and Saraf [7][8][9] and are based on the LTE assumption for radiative emission. However, Gilles and Vincenti [10] have derived a non-LTE radiative transfer equation though their main objective was to modify the equations of continuum gas dynamics. In this paper, we study the problem [11] of the interaction of non-equilibrium radiation with a diatomic gas.…”

A study of infrared radiation of vibrationally excited CO in the 4.7 μm band and CO2 in the 4.3 μm and 2.7 μm bands

“…[1][2][3][4][5][6]. IR-radiation transfer studies in the vibrationally nonequilibrated diatomic molecular gas have been made in [7][8][9][10] and, as applied to the active CO2-laser medium, in [11,12].…”

Models for Infrared Atmospheric Radiation

“…As such, these models are quite useful in many engineering applications (for some recent applications, see [19,,95-102] where (ow) e is the effective band width, and K is the mean absorption coefficient for the interval (Aw) e At relatively high temperatures, the spectral intervals between fundamental bands of infrared active gases are filled by the combination and overtone bands. Under these conditions, modified forms of the box model become useful in radiative transfer calculations [103]. Further discussion and application of the box model is available in references [16, 22, 1041.…”