dc.contributor
Universitat Politècnica de Catalunya. Centre Tecnològic de la Transferència de Calor
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Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics
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Universitat Politècnica de Catalunya. CTTC - Centre Tecnològic de la Transferència de Calor
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Universitat Politècnica de Catalunya. GREENTECH - Grup de Recerca en Tecnologies Renovables
dc.contributor.author
Colomer Rey, Guillem
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Consul Serracanta, Ricard
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Oliva Llena, Asensio
dc.identifier
Colomer, G.; Consul, R.; Oliva, A. Coupled radiation and natural convection: Different approaches of the slw model for a non-gray gas mixture. "Journal of quantitative spectroscopy and radiative transfer", Setembre 2007, vol. 107, núm. 1, p. 30-46.
dc.identifier
https://hdl.handle.net/2117/367585
dc.identifier
10.1016/j.jqsrt.2006.12.011
dc.description.abstract
The coupling between non-gray radiation heat transfer and convection–conduction heat transfer is studied. The spectral line weighted sum of gray gases model (SLW) is used to account for non-gray radiation properties. The aim of this work is to analyze the influence of the different approaches used when calculating the parameters of the SLW model. Such strategies include the use of optimized model coefficients to reduce the number of operations, and the interpolation of the distribution function instead of the use of mathematical correlations. Non-gray calculations are also compared to gray solutions using the Planck mean absorption coefficient, which can be also calculated with the SLW model. The radiative transfer equation (RTE) is solved by means of the discrete ordinates method (DOM). A natural convection driven cavity is chosen to couple radiation and conduction–convection energy transfer. Several cases, with a significant variation of the ratio between radiation to convection heat transfer, as well as the ratio between radiation to conduction heat transfer, are discussed.
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The research has been financially supported by the ‘Ministerio de Ciencia y Tecnología’, Spain (Ref. TIC 2003-07970).
dc.description.abstract
Postprint (author's final draft)
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application/pdf
dc.relation
https://www.sciencedirect.com/science/article/abs/pii/S0022407307000064
dc.rights
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
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Attribution-NonCommercial-NoDerivs 3.0 Spain
dc.subject
Àrees temàtiques de la UPC::Física::Termodinàmica
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Heat - Radiation and absorption
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Heat -- Convection
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Heat -- Transmission
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Non gray media
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Calor -- Transmissió
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Calor -- Convecció
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Heat - Radiation and absorption
dc.title
Coupled radiation and natural convection: Different approaches of the slw model for a non-gray gas mixture
