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Erschienen in: Thermal Engineering 9/2022

01.09.2022 | HEAT AND MASS TRANSFER AND PROPERTIES OF WORKING FLUIDS AND MATERIALS

Modern Methods for Numerical Simulation of Radiation Heat Transfer in Selective Gases (Review)

verfasst von: V. A. Kuznetsov

Erschienen in: Thermal Engineering | Ausgabe 9/2022

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Abstract

Radiative heat transfer in a gaseous medium of furnaces and ovens is the most important heat-transfer process controlling the efficiency of industrial installations. This explains the great interest of thermal engineers in modern methods of numerical simulation of radiative heat transfer. Heat transfer in high-temperature gases is mathematically described by the differential equation of radiative heat transfer together with the transport equations of thermal convection. The main problem is that triatomic gases, such as water vapor and carbon dioxide, selectively emit and absorb radiation energy, as a result of which their absorption coefficients become variable in spatial coordinates. The advances of recent decades in infrared spectroscopy have brought about favorable conditions for the development of well-substantiated models suitable for the calculation of absorption coefficients of the most important triatomic gases. The polylinear calculation of radiative transfer in a million spectral lines gave way to a narrow band model with a correlated absorption coefficient and then to global full spectrum models. Along with models of the absorption coefficient, methods for the numerical solution of the differential equation of radiative transfer are being improved. As a result, more than a dozen different models and methods can be used at present to calculate radiative heat transfer in industrial units. The proposed review partially eliminates the lack of publications that compare different approaches to the numerical study of radiation problems. It traces, up to up to the present time, more than 20 years of successive development of mathematical models of radiative heat transfer in selective gases. The main methods for the iterative solution of the differential equation of radiative heat transfer are also included in the review. At the same time, to eliminate complication of the model analysis, the review does not include excess information on boundary conditions and beam scattering. To ensure the unambiguity of the concepts used, the review is preceded by a short theoretical note.

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Literatur
1.
Zurück zum Zitat H. C. Hottel and A. F. Sarofim, Radiative Transfer (McGraw-Hill, New York, 1967). H. C. Hottel and A. F. Sarofim, Radiative Transfer (McGraw-Hill, New York, 1967).
2.
Zurück zum Zitat M. N. Özişik, Radiative Transfer and Interactions with Conduction and Convection (Wiley, New York, 1973; Mir, Moscow, 1976). M. N. Özişik, Radiative Transfer and Interactions with Conduction and Convection (Wiley, New York, 1973; Mir, Moscow, 1976).
Metadaten
Titel
Modern Methods for Numerical Simulation of Radiation Heat Transfer in Selective Gases (Review)
verfasst von
V. A. Kuznetsov
Publikationsdatum
01.09.2022
Verlag
Pleiades Publishing
Erschienen in
Thermal Engineering / Ausgabe 9/2022
Print ISSN: 0040-6015
Elektronische ISSN: 1555-6301
DOI
https://doi.org/10.1134/S0040601522080043

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