Numerical Model on the Interaction of a Vacuum Arc with a Copper Cathode

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著者

    • MESSAAD Mohammed
    • Department of Electrotechnics, Faculty of Electrical Engineering, University of Science and Technology (USTO)
    • BELARBI Ahmed Wahid
    • Department of Electrotechnics, Faculty of Electrical Engineering, University of Science and Technology (USTO)
    • LEFORT Andre
    • Electric Arc and Thermal Plasmas Laboratory, Blaise Pascal University

抄録

Experimental and theoretical studies of arc cathode region have been made during several decades and the task is not yet completed, in spite of many efforts and progress. In this work, a numerical model describing the arc cathode region is developed. The arc is treated as a steady state phenomenon. The model is then applied to a vacuum arc discharge interacting with a Cu cathode at low current (4–50 A). The model yields the temperature and electric field strength at the cathode surface, electrons emitted and total current density, cathode spot radius, different kinds of power densities heating and cooling the cathode, and the plasma electron density. The comparison with experimental results shows good agreements.

収録刊行物

  • ISIJ international

    ISIJ international 46(11), 1618-1625, 2006-11-15

    The Iron and Steel Institute of Japan

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