Band Model Parameters for the 2.7Micrometer Bands of H2O and CO2in the 100to 3000 K Temperature Range.

摘要

Sets of band model parameters for H2O and CO2in the 2.7micrometer spectral region and consistent for the entire temperature range from near-ambient atmosphereric temperatures (about 200K) to gas combustion temperatures (about 2500K),are constructed. These constructions are accomplished by joining together band model parameters derived from the AFCRL atmosphteric absorption line data compilation (LINAVE parameters) and parameters tabulated in the NASA Handbook of Infrared Radiation from Combustion Gases (NASA parameters). The former set adequately describes the low-temperature variation of the parameters but is inadequate for some high-temperature applications. The latter set is suitable for high-temperature applications but fails for some low-temperature cases. Examples of the deficiencies of these two sets are presented by comparison with experimental absorption and emission spectra for low-and high-temperature gas samples. The adequacy of the combined band model parameter set (COMB parameters) is demonstrated by comparison with the same experimental data. Criteria for and examples of the construction of the combined sets are given,and tabulations of the parameter sets are included.