Effects of shroud gas on laminar argon plasma jets impinging on a substrate in ambient air

  • Kai Cheng*
  • , Xi Chen
  • , Wen Xia Pan
  • , Hai Xing Wang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

When materials processing using laminar argon plasma jets is performed in ambient air, the entrainment of air into the jets will lead to the oxidation of processed metallic materials. Employing a co-axial shrouding gas is a feasible approach to reduce the undesirable material oxidation. This paper studies numerically the effects of the shrouding gas on the characteristics of the laminar argon plasma jet impinging normally upon a flat substrate located in air surroundings. The effects on the jet flow and heat/mass transfer characteristics are investigated of many related parameters, especially of the shroud gas velocity.

Original languageEnglish
Pages (from-to)1019-1021
Number of pages3
JournalKung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
Volume26
Issue number6
StatePublished - Nov 2005
Externally publishedYes

Keywords

  • Argon plasma
  • Impinging jet
  • Jet entrainment
  • Shrouding gas
  • Species diffusion

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