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Title: Impact of gas flow rate on breakdown of filamentary dielectric barrier discharges

Abstract

The influence of gas flow rate on breakdown properties and stability of pulsed dielectric barrier discharges (DBDs) in a single filament arrangement using a gas mixture of 0.1 vol. % O{sub 2} in N{sub 2} at atmospheric pressure was investigated by means of electrical and optical diagnostics, accompanied by fluid dynamics and electrostatics simulations. A higher flow rate perpendicular to the electrode symmetry axis resulted in an increased breakdown voltage and DBD current maximum, a higher discharge inception jitter, and a larger emission diameter of the discharge channel. In addition, a shift of the filament position for low gas flow rates with respect to the electrode symmetry axis was observed. These effects can be explained by the change of the residence time of charge carriers in the discharge region—i.e., the volume pre-ionization—for changed flow conditions due to the convective transport of particles out of the center of the gap.

Authors:
; ;  [1]
  1. INP Greifswald, Felix-Hausdorff-Str. 2, 17489 Greifswald (Germany)
Publication Date:
OSTI Identifier:
22599080
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 23; Journal Issue: 3; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ATMOSPHERIC PRESSURE; BREAKDOWN; CHARGE CARRIERS; COMPUTERIZED SIMULATION; DIELECTRIC MATERIALS; ELECTRIC POTENTIAL; ELECTRODES; ELECTROSTATICS; EMISSION; FILAMENTS; FLOW RATE; FLUID MECHANICS; FLUIDS; GAS FLOW; HYDRODYNAMIC MODEL; IONIZATION; MIXTURES; PARTICLES; SYMMETRY

Citation Formats

Höft, H., E-mail: hans.hoeft@inp-greifswald.de, Becker, M. M., and Kettlitz, M. Impact of gas flow rate on breakdown of filamentary dielectric barrier discharges. United States: N. p., 2016. Web. doi:10.1063/1.4943278.
Höft, H., E-mail: hans.hoeft@inp-greifswald.de, Becker, M. M., & Kettlitz, M. Impact of gas flow rate on breakdown of filamentary dielectric barrier discharges. United States. doi:10.1063/1.4943278.
Höft, H., E-mail: hans.hoeft@inp-greifswald.de, Becker, M. M., and Kettlitz, M. Tue . "Impact of gas flow rate on breakdown of filamentary dielectric barrier discharges". United States. doi:10.1063/1.4943278.
@article{osti_22599080,
title = {Impact of gas flow rate on breakdown of filamentary dielectric barrier discharges},
author = {Höft, H., E-mail: hans.hoeft@inp-greifswald.de and Becker, M. M. and Kettlitz, M.},
abstractNote = {The influence of gas flow rate on breakdown properties and stability of pulsed dielectric barrier discharges (DBDs) in a single filament arrangement using a gas mixture of 0.1 vol. % O{sub 2} in N{sub 2} at atmospheric pressure was investigated by means of electrical and optical diagnostics, accompanied by fluid dynamics and electrostatics simulations. A higher flow rate perpendicular to the electrode symmetry axis resulted in an increased breakdown voltage and DBD current maximum, a higher discharge inception jitter, and a larger emission diameter of the discharge channel. In addition, a shift of the filament position for low gas flow rates with respect to the electrode symmetry axis was observed. These effects can be explained by the change of the residence time of charge carriers in the discharge region—i.e., the volume pre-ionization—for changed flow conditions due to the convective transport of particles out of the center of the gap.},
doi = {10.1063/1.4943278},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 3,
volume = 23,
place = {United States},
year = {2016},
month = {3}
}