Detail publikace

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

KLOC, P. AUBRECHT, V. BARTLOVÁ, M. COUFAL, O. RÜMPLER, C.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

In 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.

Klíčová slova

Radiative transfer, Arc, Air, Spectral absorption coefficient, Planck mean absorption, Discrete ordinates method

Autoři

KLOC, P.; AUBRECHT, V.; BARTLOVÁ, M.; COUFAL, O.; RÜMPLER, C.

Rok RIV

2015

Vydáno

18. 10. 2015

Nakladatel

Springer US

ISSN

0272-4324

Periodikum

Plasma Chemistry and Plasma Processing

Ročník

35

Číslo

6

Stát

Spojené státy americké

Strany od

1097

Strany do

1110

Strany počet

14

URL

http://link.springer.com/article/10.1007/s11090-015-9648-3

Plný text v Digitální knihovně

http://hdl.handle.net/11012/201051

BibTex

@article{BUT117713,
  author="Petr {Kloc} and Vladimír {Aubrecht} and Milada {Bartlová} and Oldřich {Coufal} and Christian {Rümpler}",
  title="On the Selection of Integration Intervals for the Calculation of Mean Absorption Coefficients",
  journal="Plasma Chemistry and Plasma Processing",
  year="2015",
  volume="35",
  number="6",
  pages="1097--1110",
  doi="10.1007/s11090-015-9648-3",
  issn="0272-4324",
  url="http://link.springer.com/article/10.1007/s11090-015-9648-3"
}