Numerical simulations of Trichel pulses in a negative corona in air

Akishev, Yu. S.; Кочетов, И. В.; Loboiko, A. I.; Napartovich, Anatoly P.

doi:10.1134/1.1528237

Cited by 42 publications

(17 citation statements)

References 7 publications

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“…The rise time of the first pulse is around 10 ns and the pulse falls to its 50% peak value in approximately 30 ns. These values have also been reported in [27]. It can be seen that the two current calculation methods give very similar results.…”

Section: Simulation Resultssupporting

confidence: 82%

“…Regarding the modelling side of the phenomenon, most of the work have been undertaken in 1D-1.5D (continuity equations are solved in 1D along the symmetry axis while Poisson's equation is solved using the effectively 2D disc method) [9][10][11]15]. Reports on full 2D simulations are rather limited [27]. Thus the objectives of this work are to enhance the understanding of the negative corona discharge phenomenon by the full 2D axisymmetric model, to get the model input parameters validated by experimental data and to set a benchmark to further proceed with the negative surface discharge model.…”

mentioning

confidence: 99%

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Numerical modelling of negative discharges in air with experimental validation

Tran

Golosnoy

Lewin

et al. 2010

J. Phys. D: Appl. Phys.

161

113

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Axisymmetric finite element models have been developed for the simulation of negative discharges in air without and with the presence of dielectrics. The models are based on the hydrodynamic drift-diffusion approximation. A set of continuity equations accounting for the movement, generation and loss of charge carriers (electrons, positive and negative ions) is coupled with Poisson's equation to take into account the effect of space and surface charges on the electric field. The model of a negative corona discharge (without dielectric barriers) in a needle-plane geometry is analysed first. The results obtained show good agreement with experimental observations for various Trichel pulse characteristics. With dielectric barriers introduced into the discharge system, the surface discharge exhibits some similarities and differences to the corona case. The model studies the dynamics of volume charge generation, electric field variations and charge accumulation over the dielectric surface. The predicted surface charge density is consistent with experimental results obtained from the Pockels experiment in terms of distribution form and magnitude.

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Section: Simulation Resultssupporting

confidence: 82%

mentioning

confidence: 99%

Numerical modelling of negative discharges in air with experimental validation

Tran

Golosnoy

Lewin

et al. 2010

J. Phys. D: Appl. Phys.

161

113

View full text Add to dashboard Cite

show abstract

“…Also, the simulations have shown, that the following total current increase is accompanied with appearance of large positive ion density near the cathode and with propagation of the ionization wave along the cathode surface. This wave is similar to one obtained in the simulations of the Trichel pulses [6]. But the first maximum in the simulations in [5] frequently was similar to slightly raised edge of the step before the main maximum.…”

Section: Fig 1 Example Of the Total Current Time Dependencesupporting

confidence: 85%

Two Peaks of Total Current in Streamer Propagation

Bolotov¹,

Kadolin²,

Mankovskyi³

et al. 2020

Problems of Atomic Science and Technology

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The numerical simulations of the cathode directed streamer propagation in the discharge gap, with the streamer going out to cathode, are carried out. The processes are found, which take place near anode and contribute to the formation of the first of two maxima of total current time dependence. The factors are considered, which determine the propagation of the ionization process at the final stage, when the streamer approaches the cathode, and the ionization wave is propagating along the cathode surface.

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“…Another approach is to use a curvilinear grid (Kim et al 2004, Akishev et al 2002. For example, for an hyperboloidto-plane geometry, a quasi-orthogonal grid can be defined based on confocal hyperboloids and ellipses.…”

Section: Introductionmentioning

confidence: 99%

The use of the ghost fluid method for Poisson's equation to simulate streamer propagation in point-to-plane and point-to-point geometries

Célestin¹,

Bonaventura²,

Zeghondy³

et al. 2009

J. Phys. D: Appl. Phys.

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This paper presents the application of the ghost fluid method (GFM) to solve Poisson's equation for streamer discharge simulations between electrodes of complex geometries. This approach allows one to use a simple rectilinear grid and nevertheless take into account the influence of the exact shape of the electrode on the calculation of the potential and the electric field. First, the validity of the GFM approach concerning the computation of the electric field is demonstrated by performing direct comparisons in a point-to-plane geometry of the Laplacian potential and electric field calculated with this method and given by the analytical solution. Second, the GFM is applied to the simulation of a positive streamer propagation in a hyperboloid-to-plane configuration studied by Kulikovsky (1998 Phys. Rev. E 57 7066-74). Very good agreement is obtained with the results of Kulikovsky (1998) on all positive streamer characteristics during its propagation in the interelectrode gap. Then the GFM is applied to simulate the discharge in preheated air at atmospheric pressure in point-to-point geometry. The propagation of positive and negative streamers from both point electrodes is observed. After the interaction of both discharges, the very rapid propagation of the positive streamer towards the cathode in the volume pre-ionized by the negative streamer is presented. This structure of the discharge is in qualitative agreement with the experiment.

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Numerical simulations of Trichel pulses in a negative corona in air

Cited by 42 publications

References 7 publications

Numerical modelling of negative discharges in air with experimental validation

Numerical modelling of negative discharges in air with experimental validation

Two Peaks of Total Current in Streamer Propagation

The use of the ghost fluid method for Poisson's equation to simulate streamer propagation in point-to-plane and point-to-point geometries

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