Detail publikačního výsledku

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

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

Originální název

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

Anglický název

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

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Rok RIV

2016

Vydáno

19.01.2015

Nakladatel

Institute of Physics Publishing

Místo

Velká Británie

ISSN

0022-3727

Periodikum

JOURNAL OF PHYSICS D-APPLIED PHYSICS

Svazek

48

Číslo

5

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

13

Strany počet

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"
}