Development of Calculation Method for Radiative Heat Transfer in an Infrared-active Gas with Narrow-Band Nonuniformity and Its Examination Based on an Absorption Line Data Base (In Case of a Mixed Gases Field Including H2O and CO2)

Abstract

It is necessary to consider the interrelation of absorption coefficients of emitting side and absorbing side when we carry out numerical predictions of radiative heat transfer through infrared-active gases. If we utilize the combination of a wide-band model and a narrow-band model for dealing with radiative heat transfer through a infrared-active gas that has remarkable narrow band nonumiformity, we have to consider the interrelation of absorption coefficient not only about the representative value within a narrow band but also about the fine structure in a narrow band. Calculation method for radiative transfer in nonisothermal field is constructed considering narrow band nonuniformity. It is compared with line-by-line calculation based on absorption line database HITEMP, and its validity is confirmed.