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Hydrodynamical simulation of the electric wind generated by successive streamers in a point-to-plane reactor

2002; Institute of Physics; Volume: 35; Issue: 10 Linguagem: Inglês

10.1088/0022-3727/35/10/310

1361-6463

Julien Loiseau, Jean Batina, F Noël, R. Peyrous,

High voltage insulation and dielectric phenomena

An electrical corona discharge at atmospheric pressure in positive point-to-plane configuration creates an electric wind from the point to the plane which, within a few seconds, generates an axisymmetrical vortex in a closed cylindrical vessel (ring vortex). A first model for the establishment of this vortex was recently published and our study is an evolution based on an improved physical model. It does not include any empirical time scaling parameter, and takes into account the successive ionizing fronts as a varying electrical force due to the propagation of a sharp electrical field maximum acting on the space charge distribution along the interelectrode gap. After the front propagation (50 ns), the remaining positive ions drift (during 100 µs) in the slowly restoring electric field.