Nonsteady-state gas-discharge processes in plasmatron for combustion sustaining and hydrocarbon decomposition

Yury D. Korolev, Oleg B. Frants, Nikolay V. Landl, Vladimir G. Geyman, Igor B. Matveev

    Research output: Contribution to journalArticle

    31 Citations (Scopus)

    Abstract

    This paper deals with the investigation of nonsteady-state discharge regimes in the plasmatron as applied to air-hydrocarbon mixtures. The electrode system is based on the design of a classical high-current arc plasmatron. Compared with a thermal plasmatron mode, the averaged discharge current in the described device has been decreased to about 0.2 A. Then, the discharge regime can be interpreted as a kind of glow discharge with the random transitions from glow to sparks. Two types of transitions have been observed: completed and noncompleted transitions. Completed transition is accompanied by the appearance of a high-conductivity spark channel, and for noncompleted transition, a low-conductivity diffuse channel arises. The discharge features have been investigated for plasmatrons with a long-length and with a short-length anode nozzle. The principal features of the nonsteady-state discharge behavior are the same for both designs. However, for the long nozzle, the discharge phenomena mainly proceed inside the anode cavity and for the short nozzle outside the cavity. Use of different designs of the plasmatron anode cavity offers to extend an area of plasmatron applications.

    Original languageEnglish
    Pages (from-to)586-592
    Number of pages7
    JournalIEEE Transactions on Plasma Science
    Volume37
    Issue number4 PART 2
    DOIs
    Publication statusPublished - 10 Mar 2009

    Keywords

    • Combustion stabilization
    • Glow-to-spark transition
    • Hydrocarbon partial oxidation
    • Plasma torches

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Condensed Matter Physics

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