Evaluation of solution methods for radiative heat transfer in gaseous oxy-fuel combustion environments

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DOIResolve DOI: http://doi.org/10.1016/j.jqsrt.2010.04.028
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TypeArticle
Journal titleJournal of Quantitative Spectroscopy and Radiative Transfer
Volume111
Issue14
Pages20842094; # of pages: 11
SubjectRadiative transfer; Non-gray gas models; Full spectrum k-distribution; Discrete ordinates method; Oxy-fuel combustion; Computational fluid dynamics
AbstractThe exact solution to radiative heat transfer in combusting flows is not possible analytically due to the complex nature of the integro-differential radiative transfer equation (RTE). Many different approximate solution methods for the solution of the RTE in multi-dimensional problems are available. In this paper, two of the principal methods, the spherical harmonics (P1) and the discrete ordinates method (DOM) are used to calculate radiation. The radiative properties of the gases are calculated using a non-gray gas full spectrum k-distribution method and a gray method. Analysis of the effects of numerical quadrature in the DOM and its effect on computation time is performed. Results of different radiative property methods are compared with benchmark statistical narrow band (SNB) data for both cases that simulate air combustion and oxy-fuel combustion. For both cases, results of the non-gray full spectrum k-distribution method are in good agreement with the SNB data. In the case of oxy-fuel simulations with high partial pressures of carbon dioxide, use of gray method for the radiative properties may cause errors and should be avoided.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Institute for Chemical Process and Environmental Technology
Peer reviewedYes
NRC number52876
NPARC number17719189
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Record identifier19b103f9-8f87-47e4-a81b-c937aefb499f
Record created2011-05-18
Record modified2016-05-09
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