A correlation for total band absorptance of radiating gases

Infrared Radiation Properties of Methyl Methacrylate Vapor

“…The Tien-Lowder model is'a single continuous correlation as The results in Figure 7 and in Table 2 show that the integrated band intensities by the narrow-band model are located between those from the Edwards model and generally closer to those by the Tien-Lowder model than by the Edwards model, probably due to the fact that the Tien-Lowder model favors large values of the line shape parameter. Although the Tien-Lowder model is not recommended for gases with very small fi less than 0.01 (Felske and Tien, 1974;Tien and Lee, 1982), it is applicable lor all the bands of MMA vapor. Figure 8 shows that the wide-band models have provided a good correlation of the experimental total band absorption data.…”

Attenuation of Infrared Radiation Emitted from Hot Surface by Transpiration of an Absorbing Gas

“…A correlation for A(t) based on an exponential representation of the mean line intensity and the statistical band model have been develoncud [34,35] for the vibrationalrotational bands of several gases.…”

“…Equation (3.18) is a generalizat'.on of th: exponential kernel approximation [35] which can be shown to bz, equivalent to the Milne-Eddington approximation [37]. lowever, retaining additional terms is equivalent to fourth and higher order spherical harmonics expansion of the intensity.…”

“…There was no possible logical and consistent way to adjust the correlation constants and the bandwidth in the total band absorptance equation [3,34,35] to correspond with the bandwidth of the wide band pass filter used with the radiation detector.…”

Steady Radiative Free Convective Flow Along A Vertical Flat Plate In The Presence Of Magnetic Field

“…His solution was based on perturbation technique and was applicable for small values of the conduction-radiation interaction parameter. Novotny et al (1974), however, made a non-gray analysis employing the method of local non-similarity and the continuous correlation of Tien and Lowder (1966) to account for the absorption. The effects of radiation on free convection flow of a gas past a semi infinite flat plate was studied by Soundalgekar and Takhar (1981) using the Cogley-Vincentine-Giles equilibrium model.…”