Comparison of the standard weighted-sum-of-gray-gases with the absorption-line blackbody distribution function for the computation of radiative heat transfer in H2O/CO2 mixtures

Maurente, André Jesus Soares; Vielmo, Horácio Antonio; França, Francis Henrique Ramos

Comparison of the standard weighted-sum-of-gray-gases with the absorption-line blackbody distribution function for the computation of radiative heat transfer in H2O/CO2 mixtures

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dc.contributor.author	Maurente, André Jesus Soares
dc.contributor.author	Vielmo, Horácio Antonio
dc.contributor.author	França, Francis Henrique Ramos
dc.date.accessioned	2021-03-17T17:47:54Z
dc.date.available	2021-03-17T17:47:54Z
dc.date.issued	2008-07
dc.description.resumo	This paper presents the computation of radiation heat transfer in a cylindrical enclosure in which the dimensions, the chemical species concentrations and the temperature fields make a realistic representation of an actual combustion chamber. Two gas models are applied and compared: the absorption-line blackbody distribution function (ALBDF), and the standard weighted-sum-of-gray-gases (WSGG) based on coefficients and correlations that are widely used in engineering. While the standard WSGG is restricted to the assumption of homogeneous gas mixture, the ALBDF can be applied to both homogeneous and non-homogeneous media. For the two gas models, the radiative exchanges are computed with the aid of the Monte Carlo method. The results show considerable discrepancies between the WSGG and the ALBDF models for the homogeneous medium. In addition, the importance of considering the non-homogeneity of the medium for an accurate computation of the radiative heat transfer is shown. r 2008 Elsevier Ltd. All rights reserved	pt_BR
dc.identifier.citation	MAURENTE, A.; VIELMO, H.A.; FRANÇA, F.H.R.. Comparison of the standard weighted-sum-of-gray-gases with the absorption-line blackbody distribution function for the computation of radiative heat transfer in H2O/CO2 mixtures. Journal of Quantitative Spectroscopy and Radiative Transfer, [S.L.], v. 109, n. 10, p. 1758-1770, jul. 2008. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0022407308000277. Acesso em: 10 nov. 2020. http://dx.doi.org/10.1016/j.jqsrt.2008.02.006.	pt_BR
dc.identifier.doi	10.1016/j.jqsrt.2008.02.006
dc.identifier.issn	0022-4073
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/31910
dc.language	en	pt_BR
dc.publisher	Elsevier	pt_BR
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/br/	*
dc.subject	Radiative transfer	pt_BR
dc.subject	Gas models	pt_BR
dc.subject	Monte Carlo	pt_BR
dc.subject	Absorption-line blackbody distribution function;	pt_BR
dc.subject	Weighted-sum-of-gray-gases	pt_BR
dc.subject	Combustion systems	pt_BR
dc.title	Comparison of the standard weighted-sum-of-gray-gases with the absorption-line blackbody distribution function for the computation of radiative heat transfer in H2O/CO2 mixtures	pt_BR
dc.type	article	pt_BR