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

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. % O2 in N2 at atmospheric pressure was investigated by means of electrical and optical diagnostics, accompanied by flui...

Full description

Saved in:
Bibliographic Details
Published in:Physics of plasmas 2016-03, Vol.23 (3)
Main Authors: Höft, H., Becker, M. M., Kettlitz, M.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ATMOSPHERIC PRESSURE
BREAKDOWN
CHARGE CARRIERS
COMPUTERIZED SIMULATION
Current carriers
Dielectric breakdown
DIELECTRIC MATERIALS
Dielectric properties
ELECTRIC POTENTIAL
ELECTRODES
ELECTROSTATICS
EMISSION
FILAMENTS
FLOW RATE
Flow stability
Flow velocity
Fluid dynamics
FLUID MECHANICS
FLUIDS
GAS FLOW
HYDRODYNAMIC MODEL
IONIZATION
MIXTURES
PARTICLES
Plasma
Plasma physics
SYMMETRY
Vibration
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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. % O2 in N2 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.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4943278