Evaluation of the absorption line blackbody distribution function of CO2 and H2O using the proper orthogonal decomposition and hyperbolic correlations

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DOIResolve DOI: http://doi.org/10.1016/j.jqsrt.2012.07.009
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TypeArticle
Proceedings titleJournal of Quantitative Spectroscopy and Radiative Transfer
ConferenceEurotherm Seminar 95: Computational Thermal Radiation in Participating Media IV, April 18-20, 2012, Nancy, France
ISSN00224073
Volume128
Pages2733
SubjectLine-by-line; Spectral line based weight-sum-of-grey-gases model; Absorption line blackbody function; Proper orthogonal decomposition; Hyperbolic correlation
AbstractDatabases of the absorption line blackbody distribution function (ALBDF) of CO2 and H2O were generated over a wide range of gas and blackbody temperatures and the full range of gas concentration from line-by-line (LBL) calculations using the latest version of HITEMP. Proper orthogonal decomposition (POD) and the hyperbolic correlations (HC) were then used for rapid calculation the ALBDF value at an arbitrary combination of gas and blackbody temperatures and gas concentration. A novel hyperbolic correlation for H2O was proposed to fully account for the self-broadening effect. The accuracy of POD and the HC was evaluated by comparing the ALBDF values and the total gas emissivities from these two approximate methods at several selected conditions against those from LBL calculations. POD is significantly more accurate than HC at essentially no extra computational costs.
Publication date
LanguageEnglish
AffiliationMeasurement Science and Standards; National Research Council Canada
Peer reviewedYes
IdentifierS0022407312003342
NPARC number21268805
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Record identifier7659ab33-95d2-4a6f-8038-43fd2a1c5fb0
Record created2013-11-13
Record modified2016-05-09
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