An effect of magnetic field on arc plasma flow

Pavel Kotalík, Hideya Nishiyama

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


MHD equations for electric arcs predict recirculation zones in front of electrodes of plasma torches that are consumed faster as a result. The same equations suggest that a weak applied uniform dc magnetic field parallel to the presumably axisymmetric plasma flow can remove the reverse flows, and thus protect the electrodes. As an example, results from a model for a water-stabilized plasma torch and its near-cathode region are presented. At an arc current of 400 A, an applied magnetic field of - 0.06 T completely removes the recirculation zone.

Original languageEnglish
Pages (from-to)160-161
Number of pages2
JournalIEEE Transactions on Plasma Science
Issue number1 I
Publication statusPublished - 2002 Feb
Externally publishedYes


  • Electric arcs
  • MHD equations
  • Plasma torches

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics


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