CALCULATION OF THE EMISSION CHARACTERISTICS OF THERMALLY NONEQUILIBRIUM CO2 GAS IN THE RANGE 3200–5400 CM–1 USING THE LINE-BY-LINE AND STATISTICAL NARROW-BAND MODELS
https://doi.org/10.56304/S2079562924060228
EDN: CXNASQ
Abstract
A method for calculating the absorption and emission characteristics of CO2 in the range from 3200 to 5400 cm–1 taking into account the influence of thermal disequilibrium is presented. A series of calculations using line-by-line (LBL) and statistical narrow-band (SNB) models have been performed at various pressures, spectral regions, layer thicknesses, temperatures, and molar fractions of CO2. The obtained technique shows good agreement between the LBL and SNB models and satisfactorily agrees with experimental data when calculating the transmission capacity. In the considered range, the nonequilibrium in rotational temperature hardly affects the radiative characteristics, unlike translational and vibrational temperatures, which significantly affect the nonequilibrium Planck function. The resulting technique can be used for calculations concerning the problem of global warming.
About the Authors
A. M. Molchanov
Moscow Aviation Institute (National Research University)
Russian Federation
Russian Federation
D. S. Yanyshev
Moscow Aviation Institute (National Research University)
Russian Federation
Russian Federation
L. V. Bykov
Moscow Aviation Institute (National Research University)
Russian Federation
Russian Federation
A. S. Kovalenko
Moscow Aviation Institute (National Research University)
Russian Federation
Russian Federation
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Review
For citations:
Molchanov A.M., Yanyshev D.S., Bykov L.V., Kovalenko A.S. CALCULATION OF THE EMISSION CHARACTERISTICS OF THERMALLY NONEQUILIBRIUM CO2 GAS IN THE RANGE 3200–5400 CM–1 USING THE LINE-BY-LINE AND STATISTICAL NARROW-BAND MODELS. Nuclear Physics and Engineering. 2025;16(1):96-107. (In Russ.) https://doi.org/10.56304/S2079562924060228. EDN: CXNASQ
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