Bulletin of the American Physical Society
75th Annual Gaseous Electronics Conference
Volume 67, Number 9
Monday–Friday, October 3–7, 2022;
Sendai International Center, Sendai, Japan
The session times in this program are intended for Japan Standard Time zone in Tokyo, Japan (GMT+9)
Session IF4: Dielectric Barrier and Corona Discharges
4:00 PM–5:30 PM,
Friday, October 7, 2022
Sendai International Center
Room: Sakura 2
Chair: Keisuke Takashima, Tohoku University
Abstract: IF4.00006 : Multi-inception patterns of emitter array/collector systems in DC corona discharge*
5:15 PM–5:30 PM
Presenter:
Corentin Marion
(Institut de Mecanique des Fluides de Tou)
Authors:
Corentin Marion
(Institut de Mecanique des Fluides de Tou)
Franck Plouraboue
(INSA University of Toulouse)
David Fabre
(Institut de Mécanique des Fluides de Toulouse)
Julien Lemetayer
(Institut de Mécanique des Fluides de Toulouse)
This contribution focuses on analyzing the detailed physics behind this failure, that is named 'multiple emitters un-scalability'. It is established that this un-scalability is related to the inability of multiple corona discharge inceptions when increasing the emitter number and/or density. This confirms recent findings that corona discharge inception is shielded by electro-static interactions between emitters. This contribution demonstrates that this shielding can be balanced by emitter/collector electrostatic interactions depending on the considered configuration.
Intermediate configurations for which the collector is neither sufficiently close nor distant from the emitter array center provide a variety of multi-inception patterns that are hereby analyzed. Combining finite element computations of multi-inception drift-diffusion modeling with experimental measurements, provides a coherent picture explaining why multiple emitters sources systems do not lead to full ignition, and also exhibit conditions for which it does, leading to multiple emitters scalable systems.
*RTRA STAE Grant 'IOWIND' Number R010-L00-T00/2019-CIF-R-103
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