  In a DC point-to-plane corona discharge reactor, the mono filamentary
streamers cross the inter electrode gap with a natural repetition frequency of
some tens of kHz. The discharge phase (including the primary and the secondary
streamers development) lasts only some hundred of nanoseconds while the
post-discharge phases occurring between two successive discharge phases last
some tens of microseconds. From the point of view of chemical activation, the
discharge phases create radical and excited species located inside the very
thin discharge filaments while during the post-discharge phases these radical
and excited species induce a chemical kinetics that diffuse in a part of the
reactor volume. From the point of view of hydrodynamics activation, the
discharge phases induce thermal shock waves and the storage of vibrational
energy which relaxes into thermal form only during the post-discharge phase.
Furthermore, the glow corona discharges that persist during the post-discharge
phases induce the so called electrical wind. In the present work, the
post-discharge phase is simulated in a bi-dimensional geometry using the
commercial FLUENT software. The discharges effects (radical and excited species
creation and thermal relaxation) are involved through chemical and energy
source terms calculated from a complete 2Drz streamer model already developed.
