Electrical modelling approach for discharge analysis of a coaxial DBD tube filled with argon

Pal, Udit Narayan; Sharma, Amit; Soni, J.; Kr, Sonu; Khatun, Hasina; Kumar, Mahesh; Meena, B. S.; Tyagi, M S; Lee, B.-J.; Iberler, M.; Jacoby, J.; Frank, K.

doi:10.1088/0022-3727/42/4/045213

Cited by 49 publications

(16 citation statements)

References 19 publications

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“…[17][18][19] However, the cylindrical configurations of co-axial systems adds an asymmetry due to the difference in surface areas of the electrodes and this has been shown to affect the discharge characteristics. The discharge behaviour is also modified when the dielectric barrier layer is covering just one of the electrodes.…”

Section: Model Descriptionmentioning

confidence: 99%

“…[13][14][15][16] However, most of these studies have been performed on DBDs between parallel-plate electrodes, whereas diagnostics on DBDs with co-axial electrode configuration are comparatively less. [17][18][19] Most of the applications of nonthermal plasma used for decomposing gaseous pollutants are performed in co-axial DBD reactors. 8,11,20 Thus, there is a need to expand on the preliminary parametric studies on coaxial electrode DBD and study the influence of process parameters on a broader range to get a complete understanding of the process.…”

Section: Introductionmentioning

confidence: 99%

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Numerical investigation of co-axial DBD: Influence of relative permittivity of the dielectric barrier, applied voltage amplitude, and frequency

Gadkari

2017

Physics of Plasmas

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In this work, a one-dimensional numerical fluid model is developed for co-axial dielectric barrier discharge in pure helium and a parametric study is performed to systematically study the influence of relative permittivity of the dielectric barrier and the applied voltage amplitude and frequency on the discharge performance. Discharge current, gap voltage, and spatially averaged electron density profiles are presented as a function of relative permittivity and voltage parameters. For the geometry under consideration, both the applied voltage parameters are shown to increase the maximum amplitude of the discharge current peak up to a certain threshold value, above which it stabilized or decreased slowly. The spatially averaged electron density profiles follow a similar trend to the discharge current. Relative permittivity of the dielectric barrier is predicted to have a positive influence on the discharge current. At lower frequency, it is also shown to lead to a transition from Townsend to glow discharge mode. Spatially and time averaged power density is also calculated and is shown to increase with increasing relative permittivity, applied voltage amplitude, and frequency.

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Section: Model Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical investigation of co-axial DBD: Influence of relative permittivity of the dielectric barrier, applied voltage amplitude, and frequency

Gadkari

2017

Physics of Plasmas

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“…Electrical modeling is the modeling by constructing an electrical circuit to characterize the overall discharge behavior of the DBD. The electrical modeling can be used to predict the external quantities such as external current and voltage [13][14][15][16]. On the other hand, the physical modeling is based on theoretical model such as the ionization and fluid models.…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of a DBD in glow mode at atmospheric pressure

Saridj

Belarbi

2019

J Theor Appl Phys

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In this work, a fluid model of helium glow discharge at atmospheric pressure in a dielectric barrier discharge configuration has been developed and the discharge was numerically simulated. The transport equations for charged and excited species are self-consistent coupled to the Poisson equation for the electrical field calculation. A finite difference method technique is adopted; a detailed numerical procedure modeling is given. The addition of some nitrogen impurities to the helium successfully reproduced the discharge evolution during the breakdown. The numerical results showed that the discharge has a structure similar to DC low-pressure glow discharges and confirms the establishment of the glow regime at atmospheric pressure under very adequate conditions. The profiles of physical and electrical discharge parameters knowing that, particle densities, electric field, drift velocity, voltages and discharge current are presented and analyzed. A detailed study was made of the effect of nitrogen impurities on the stability of the glow mode of the discharge, and on the evolution of its parameters.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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“…For the electrical diagnostics of the discharge, a temporally dynamic model for diffuse DBDs is used [16,17] . From this model a few equations are used which allow the calculation of internal electrical quantities in the discharge gap from measured external electrical quantities.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Power in an Argon Filled Pulsed Dielectric Barrier Discharge

Pal¹,

Gulati²,

Prakash³

et al. 2013

Plasma Sci. Technol.

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In this paper an argon filled coaxial dielectric barrier discharge (DBD) has been studied to understand the detail of power transfer from a unipolar square pulse to plasma during discharge. A dielectric barrier discharge based diffuse pulse discharge and its electrical characteristics are investigated. A quartz coaxial DBD tube filled at different pressures is used in the experiment. A unipolar pulse voltage of different peak voltages and frequencies has been applied to the discharge electrodes for the generation of microdischarges. Two current pulses are used for two consecutive discharges per applied voltage pulse. The second discharge, which occurs at the falling flank of the voltage pulse, is induced by the charges stored on the dielectric barrier during the first discharge. It has been deduced that the power supplied to ignite the first discharge is partly stored to ignite the second discharge when the applied voltage decays. This process ultimately leads to much improved power transfer to the plasma. The knowledge obtained from dynamic processes of the DBDs in the discharge gap explains quantitatively the mechanism of ignition, development and extinction of the DBDs.

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Electrical modelling approach for discharge analysis of a coaxial DBD tube filled with argon

Cited by 49 publications

References 19 publications

Numerical investigation of co-axial DBD: Influence of relative permittivity of the dielectric barrier, applied voltage amplitude, and frequency

Numerical investigation of co-axial DBD: Influence of relative permittivity of the dielectric barrier, applied voltage amplitude, and frequency

Numerical modeling of a DBD in glow mode at atmospheric pressure

Analysis of Power in an Argon Filled Pulsed Dielectric Barrier Discharge

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