Electro-hydrodynamics and kinetic modelling of polluted air flow activated by multi-tip-to-plane corona discharge

The present paper is devoted to the 2D simulation of an Atmospheric Corona Discharge Reactor (ACDR) involving 10 pins powered by a DC high voltage and positioned 7 mm above a grounded metallic plane. The corona reactor is periodically crossed by thin mono filamentary streamers with a natural repetit...

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Bibliographic Details
Published in:Journal of applied physics 2013-04, Vol.113 (15)
Main Authors: Meziane, M., Eichwald, O., Sarrette, J. P., Ducasse, O., Yousfi, M., Marchal, F.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Aerodynamics
AIR FLOW
Applied physics
Atmospheric models
CHEMICAL REACTORS
Computational fluid dynamics
Computer simulation
CORONA DISCHARGES
Discharge
ELECTROHYDRODYNAMICS
Engineering Sciences
Fluid flow
High voltages
Neutral gases
Organic chemistry
PERIODICITY
PLASMA
PLASMA SIMULATION
Plasmas
Reaction kinetics
Simulation
Stellar coronas
Streamer formation
Thermal energy
THERMAL SHOCK
TRANSFORMATIONS
TURBULENCE
TWO-DIMENSIONAL CALCULATIONS
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Summary:The present paper is devoted to the 2D simulation of an Atmospheric Corona Discharge Reactor (ACDR) involving 10 pins powered by a DC high voltage and positioned 7 mm above a grounded metallic plane. The corona reactor is periodically crossed by thin mono filamentary streamers with a natural repetition frequency of some tens of kHz. The simulation involves the electro-dynamic, chemical kinetic, and neutral gas hydrodynamic phenomena that influence the kinetics of the chemical species transformation. Each discharge stage (including the primary and the secondary streamers development and the resulting thermal shock) lasts about one hundred nanoseconds while the post-discharge stages occurring between two successive discharge phases last one hundred microseconds. The ACDR is crossed by a lateral air flow including 400 ppm of NO. During the considered time scale of 10 ms, one hundred discharge/post-discharge cycles are simulated. The simulation involves the radical formation and thermal exchange between the discharges and the background gas. The results show how the successive discharges activate the flow gas and how the induced turbulence phenomena affect the redistribution of the thermal energy and the chemical kinetics inside the ACDR.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4801879