Modeling of the flow, temperature and concentration fields in an arc plasma reactor with argon-nitrogen atmosphere

Agustin M. Fudolig, Hiroshi Nogami, Jun Ichiro Yagi

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

A mathematical formulation was developed for describing the flow behavior, temperature profile and concentration fields in pure or mixed argon and nitrogen arc plasmas impinging on a metal target inside a reactor. The simulation involves solution to conservation equations of mass, momentum, energy, k-ε model, chemical species, and current continuity. "Combined" diffusion coefficients were used in chemical species conservation to account for all species present in the plasma. An increase in the proportion of nitrogen introduced in the reactor results in higher arc velocity and temperature, reduced arc column diameter and increased heat flux imparted to the metal target. Demixing resulted to an increase of mass fraction of nitrogen at the central portion of the arc.

Original languageEnglish
Pages (from-to)1222-1228
Number of pages7
JournalIsij International
Volume36
Issue number9
DOIs
Publication statusPublished - 1996 Jan 1

Keywords

  • Concentration field
  • Flow characteristics
  • Mixed gas plasma
  • Simulation
  • Temperature distribution
  • Transferred arc plasma

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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