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.

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 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 Influence of a Point-to-Plane DC Negative Corona Discharge on Gel Surfaces

10.14311/1033 ◽  
2008 ◽  
Vol 48 (4) ◽  
Author(s):  
Y. Klenko ◽  
V. Scholtz
Keyword(s):  
Experimental Investigation ◽  
Surface Modification ◽  
Electric Field ◽  
Corona Discharge ◽  
Biomedical Applications ◽  
Single Point ◽  
Polymer Surfaces ◽  
Negative Corona ◽  
Negative Corona Discharge ◽  
Time Periods

Point-to-plane corona discharge is widely used for modifying polymer surfaces for biomedical applications and for sterilization and decontamination. This paper focuses on an experimental investigation of the influence of the single-point and multi-point corona discharge electric field on gel surface. Three types of gelatinous agar were used as the gel medium: blood agar, nutrient agar and Endo agar. The gel surface modification was studied for various time periods and discharge currents. 

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