Publication result detail

Radiation transfer in air and air-Cu plasmas for two temperature profiles

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

Original Title

Radiation transfer in air and air-Cu plasmas for two temperature profiles

English Title

Radiation transfer in air and air-Cu plasmas for two temperature profiles

Type

WoS Article

Original Abstract

In this article we present our results from calculations of the divergence of the radiation flux in a high temperature air-Cu plasma arc. We assumed stationary plasma, with local thermodynamic equilibrium valid throughout the plasma volume. We paid attention especially to the presence of copper lines in the absorption coefficient spectra and their influence on the energy transfer. Two distinct temperature regimes were used, with one focusing on a steep temperature gradient and the other involving a slowly varying temperature profile. The temperature ranges from 25 kK at the arc center down to 3 kK at the plasma arc boundary. Uniform pressure of 1 bar was considered in all cases. The results show that a large amount of energy is emitted by the copper vapor, which helps with cooling the arc.

English abstract

In this article we present our results from calculations of the divergence of the radiation flux in a high temperature air-Cu plasma arc. We assumed stationary plasma, with local thermodynamic equilibrium valid throughout the plasma volume. We paid attention especially to the presence of copper lines in the absorption coefficient spectra and their influence on the energy transfer. Two distinct temperature regimes were used, with one focusing on a steep temperature gradient and the other involving a slowly varying temperature profile. The temperature ranges from 25 kK at the arc center down to 3 kK at the plasma arc boundary. Uniform pressure of 1 bar was considered in all cases. The results show that a large amount of energy is emitted by the copper vapor, which helps with cooling the arc.

Keywords

radiation transfer; air; copper vapour; discrete ordinates method; plasma

Key words in English

radiation transfer; air; copper vapour; discrete ordinates method; plasma

Authors

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

RIV year

2016

Released

19.01.2015

Publisher

Institute of Physics Publishing

Location

Velká Británie

ISBN

0022-3727

Periodical

JOURNAL OF PHYSICS D-APPLIED PHYSICS

Volume

48

Number

5

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

13

Pages count

13

URL

http://iopscience.iop.org.ezproxy.lib.vutbr.cz/0022-3727/48/5/055208/pdf/0022-3727_48_5_055208.pdf

BibTex

@article{BUT112809,
  author="Petr {Kloc} and Vladimír {Aubrecht} and Milada {Bartlová} and Oldřich {Coufal}",
  title="Radiation transfer in air and air-Cu plasmas for two temperature profiles",
  journal="JOURNAL OF PHYSICS D-APPLIED PHYSICS",
  year="2015",
  volume="48",
  number="5",
  pages="1--13",
  doi="10.1088/0022-3727/48/5/055208",
  issn="0022-3727",
  url="http://iopscience.iop.org.ezproxy.lib.vutbr.cz/0022-3727/48/5/055208/pdf/0022-3727_48_5_055208.pdf"
}