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Author Solovjov, Vladimir ♦ André, Frédéric ♦ Lemonnier, Denis ♦ Webb, Brent
Source Hyper Articles en Ligne (HAL)
Content type Text
Publisher Elsevier
File Format PDF
Language English
Subject Keyword Gas radiation ♦ rank correlation of gas absorption spectra ♦ Generalized SLW Method ♦ SLW reference approach ♦ Rank Correlated SLW model ♦ spi ♦ Engineering Sciences [physics] ♦ Engineering Sciences [physics]/Reactive fluid environment
Abstract A comprehensive theoretical development of possible reference approaches in modelling of radiation transfer in non-uniform gaseous media is developed within the framework of the Generalized SLW Model. The notion of absorption spectrum "correlation" adopted currently for global methods in gas radiation is critically revisited and replaced by a less restrictive concept of rank correlated spectrum. Within this framework it is shown that eight different reference approaches are possible, of which only three have been reported in the literature. Among the approaches presented is a novel Rank Correlated SLW Model, which is distinguished by the fact that i) it does not require the specification of a reference gas thermodynamic state, and ii) it preserves the emission term in the spectrally integrated Radiative Transfer Equation. Construction of this reference model requires only two absorption line blackbody distribution functions, and subdivision into gray gases can be performed using standard quadratures. Consequently, this new reference approach appears to have significant advantages over all other methods, and is, in general, a significant improvement in the global modelling of gas radiation. All reference approaches are summarized in the present work, and their use in radiative transfer prediction is demonstrated for simple example cases. Further, a detailed rigorous theoretical development of the improved methods is provided.
ISSN 00224073
Educational Use Research
Learning Resource Type Article
Publisher Date 2017-08-01
Journal Journal of Quantitative Spectroscopy and Radiative Transfer
Volume Number 197
Page Count 19
Starting Page 26
Ending Page 44