scholarly journals Simulation of negative corona discharge in atmospheric air: from mode of Trichel pulses to stationary discharge

2021 ◽  
Vol 2064 (1) ◽  
pp. 012024
Author(s):  
A O Kokovin ◽  
A V Kozyrev ◽  
V Yu Kozhevnikov
Keyword(s):  
Corona Discharge ◽  
Applied Voltage ◽  
Atmospheric Pressure ◽  
Physical Mechanism ◽  
Pulse Mode ◽  
Negative Corona ◽  
Discharge Mode ◽  
Negative Corona Discharge ◽  
Spatio Temporal ◽  
Two Stages

Abstract The paper presents a 2D multi-fluid non-stationary model of a negative corona discharge in atmospheric-pressure air in the needle-to-plane diode. Discharges were simulated in gaps up to 1 cm with an applied voltage in the range of 8-100 kV. The simulation results demonstrate two stages of the discharge evolution: a pulsed-periodic stage called the Trichel pulses mode and a stationary glow discharge mode. The spatio-temporal distributions of the discharge plasma and electric field are shown in detail. Physical mechanism of Trichel pulses formation and transition to the stationary discharge are also revealed. The duration of the Trichel pulse mode gradually decreases with increasing of the applied voltage.

scholarly journals Effect of transverse airflow on the deflection of negative corona discharge on the Trichel pulse mode at atmospheric pressure

AIP Advances ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 125107
Author(s):  
Yulin Guo ◽  
Xing Zhang ◽  
Yanru Li ◽  
Guanjun Zhang ◽  
Anbang Sun
Keyword(s):  
Corona Discharge ◽  
Atmospheric Pressure ◽  
Pulse Mode ◽  
Negative Corona ◽  
Negative Corona Discharge

scholarly journals AZIMUTHAL STABILITY OF TRICHEL PULSES AND CATHODE DIRECTED STREAMERS

2019 ◽  
pp. 130-134
Author(s):  
O. Bolotov ◽  
B. Kadolin ◽  
S. Mankovskyi ◽  
V. Ostroushko ◽  
I. Pashchenko ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Corona Discharge ◽  
Pulse Mode ◽  
Negative Corona ◽  
Nonlinear Stage ◽  
Negative Corona Discharge ◽  
The Difference

The numerical simulations of negative corona discharge in Trichel pulse mode are carried out with the calculation of evolution of azimuthal perturbations. It is found the azimuthal instability with increment corresponding to avalanche development. This instability is suppressed at the nonlinear stage and does not lead to the process branching. The result is also applicable to the azimuthal instability of the cathode directed streamer, found earlier. The difference in their increments is followed from the difference in courses of the processess, which is discuss.

Surface Electric Field for Negative Corona Discharge in Atmospheric Pressure Air

2011 ◽  
Vol 39 (8) ◽  
pp. 1644-1651 ◽  
Author(s):  
Yuesheng Zheng ◽  
Jinliang He ◽  
Bo Zhang ◽  
Rong Zeng ◽  
Zhanqing Yu
Keyword(s):  
Electric Field ◽  
Corona Discharge ◽  
Atmospheric Pressure ◽  
Negative Corona ◽  
Negative Corona Discharge ◽  
Surface Electric Field

Effect of the Corona Discharge on ZnTe Film

2011 ◽  
Vol 314-316 ◽  
pp. 171-175 ◽  
Author(s):  
Na Ri ◽  
Guo Rong Li
Keyword(s):  
Electric Field ◽  
Corona Discharge ◽  
High Voltage ◽  
Discharge Current ◽  
Applied Voltage ◽  
Blue Shift ◽  
Negative Corona ◽  
Voltage Range ◽  
Negative Corona Discharge ◽  
Electric Field Treatment

The effect of corona electric field on the surface of Pr-doped ZnTe thin film was studied. The device which can produce the high-voltage corona electric field is developed and used. The V-A characteristics of positive and negative corona discharge between the adjacent needle plates were measured. Whether positive or negative corona discharge, the corona discharge current of the plate is increased with the applied voltage increasing; the voltage range of negative corona discharge is wider than that of the positive corona discharge, meanwhile under the same applied voltage, the negative corona discharge current is bigger, not only its curve is smooth, but also its discharge is stable. The thermal effect of electric field is small. The electric field strength is 7.0 kV•cm-1. By atomic force microscope, it is found that the size of particles becomes large and uniform, and the surface becomes rough with electric field treatment. The measurement results reveal that the average radius of particles is 108.70nm before the effect and 227.27nm after the effect. By UV-Vis Spectrophotometer, it is found that a strong optical absorption peak appears at the region of 220 - 250nm with electric field treatment. This means that the stronger light absorption peak turn out a blue shift under the effect of electric field. The phenomenon of the blue shift proves that the high-voltage corona electric field has an impact on the band gap of the film. The voltage range of the negative corona discharge is wide and stable. The thermal effect produced by the high-voltage corona electric field on the sample is very small, so usually it can be ignored. The high-voltage corona electric field can change the surface morphology of some films, makes the current density of the sample location increase in a small cross section. The negative high-voltage corona discharge should well be used to research in biophysics such as the transgenic plants. High-voltage corona discharge mutagenesis has become a new physical mutation technique. Introduction

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