On the Selection of Integration Intervals for the Calculation of Mean Absorption Coefficients

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dc.contributor.authorKloc, Petrcs
dc.contributor.authorAubrecht, Vladimírcs
dc.contributor.authorBartlová, Miladacs
dc.contributor.authorCoufal, Oldřichcs
dc.contributor.authorRümpler, Christiancs
dc.coverage.issue6cs
dc.coverage.volume35cs
dc.date.issued2015-10-18cs
dc.description.abstractIn radiation modeling of thermal plasmas non-grey models are applied where the radiative transport is described in several frequency bands (spectral intervals). Hereby mean absorption coefficients have to be calculated by a spectral integration procedure, providing a constant mean absorption coefficient for each band. Depending on the number of bands, one or more integration boundaries have to be selected in order to do the integration. In this paper we evaluate the influence of the selection of these integration boundaries on the mean absorption coefficient and the also radiation transfer by applying the mean absorption coefficients in a radiation transport model. Using a simplified two-band model we demonstrate that the selection of the integration boundary has a large impact on the total model accuracy. We show that in some cases selecting a band boundary right at the frequency where the continuum absorption shows a jump can introduce a significant error into the radiation calculation. The process of the integration interval selection thus demands a global optimization procedure to properly evaluate the boundaries of each frequency band.en
dc.description.abstractIn radiation modeling of thermal plasmas non-grey models are applied where the radiative transport is described in several frequency bands (spectral intervals). Hereby mean absorption coefficients have to be calculated by a spectral integration procedure, providing a constant mean absorption coefficient for each band. Depending on the number of bands, one or more integration boundaries have to be selected in order to do the integration. In this paper we evaluate the influence of the selection of these integration boundaries on the mean absorption coefficient and the also radiation transfer by applying the mean absorption coefficients in a radiation transport model. Using a simplified two-band model we demonstrate that the selection of the integration boundary has a large impact on the total model accuracy. We show that in some cases selecting a band boundary right at the frequency where the continuum absorption shows a jump can introduce a significant error into the radiation calculation. The process of the integration interval selection thus demands a global optimization procedure to properly evaluate the boundaries of each frequency band.en
dc.formattextcs
dc.format.extent1097-1110cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationPlasma chemistry and plasma processing. 2015, vol. 35, issue 6, p. 1097-1110.en
dc.identifier.doi10.1007/s11090-015-9648-3cs
dc.identifier.issn0272-4324cs
dc.identifier.orcid0000-0001-6906-5230cs
dc.identifier.orcid0000-0002-1380-4169cs
dc.identifier.orcid0000-0002-3888-8493cs
dc.identifier.orcid0000-0003-2388-1739cs
dc.identifier.other117713cs
dc.identifier.researcheridF-8466-2018cs
dc.identifier.researcheridC-3482-2008cs
dc.identifier.researcheridHKN-8393-2023cs
dc.identifier.scopus6506232247cs
dc.identifier.scopus6508007417cs
dc.identifier.urihttp://hdl.handle.net/11012/201051
dc.language.isoencs
dc.publisherSpringer UScs
dc.relation.ispartofPlasma chemistry and plasma processingcs
dc.relation.urihttp://link.springer.com/article/10.1007/s11090-015-9648-3cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/0272-4324/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectRadiative transferen
dc.subjectArcen
dc.subjectAiren
dc.subjectSpectral absorption coefficienten
dc.subjectPlanck mean absorptionen
dc.subjectDiscrete ordinates methoden
dc.subjectRadiative transfer
dc.subjectArc
dc.subjectAir
dc.subjectSpectral absorption coefficient
dc.subjectPlanck mean absorption
dc.subjectDiscrete ordinates method
dc.titleOn the Selection of Integration Intervals for the Calculation of Mean Absorption Coefficientsen
dc.title.alternativeOn the Selection of Integration Intervals for the Calculation of Mean Absorption Coefficientsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-117713en
sync.item.dbtypeVAVen
sync.item.insts2025.10.14 14:09:52en
sync.item.modts2025.10.14 09:42:50en
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav fyzikycs
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav elektroenergetikycs
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav výkonové elektrotechniky a elektronikycs
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