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P: Plasmaphysik
P 10: Theory and Plasma Diagnostic (Poster Session)
P 10.5: Poster
Mittwoch, 4. April 2001, 12:30–15:00, AT2
Modelization of the Maecker arc burning in the mixture of argon and nitrogen — •Ewa Pawelec1, Clarisse Delalondre2, Charles De Izarra3, and Olivier Vallee3 — 1Zaklad Fizyki Plazmy, Uniwersytet Opolski, ul. Oleska 48, 45-052 Opole, Poland — 2Laboratoire National d’Hydraulique, Electricite de France, 6 quai Watier, 78400 Chatoux, France — 3LASEP, Universite d’Orleans, Centre Universitaire de Bourges, BP 4043, 18028 Bourges Cedex 2, France
In this poster we present one and two-dimensional approach to solving the hydrodynamic equations set, describing the atmospheric pressure Maecker arc. This arc is burning in the mixture of argon and nitrogen, where the argon is the main portion of the plasma gas (due to the experimental conditions).
In the one-dimensional approach both the diffusion due to the density gradients as the termodiffusion are studied, using the approach of Murphy [1] simplified by a Maecker arc conditions. As the one-dimensional approach is relevant for Maecker arc only in the channel region, the two-dimensional approach by the program Melodie [2] is used, allowing to make the temperature, velocity and mass proportion maps in whole arc.
In the two-dimensional case only diffusion due to mass gradients is used, showing the consecutive stages of the diffusion of nitrogen in an argon arc.
[1] A.B.Murphy, Phys. Rev. Letters 73, 1797 (1994)
[2] C.Delalondre and O.Simonin, EDF Report No HE 44.01 and 44.38 (1988)