Simulation of the coronal development in air at radio frequency: the effects of attachment, secondary emission and diffusion

Author

Georghiou, G.E. ; Morrow, R. ; Metaxas, A.C.

Author_Institution

Dept. of Eng., Cambridge Univ., UK

Volume

147

Issue

2

fYear

2000

fDate

3/1/2000 12:00:00 AM

Firstpage

65

Lastpage

73

Abstract

The finite-element flux-corrected transport (FE-FCT) method is used to examine the transient development of corona discharges in a 1 cm hyperboloid (50 μm tip radius) point-plane gap in air at a frequency of 40 MHz. The investigation revealed the formation of streamers in the positive part of the voltage cycle during the transient stage. These are suppressed in the steady state due to the formation of negative ions, while a cathode fall region is fully established. The effects of attachment, secondary emission and diffusion are also examined, both in the transient and steady states

Keywords

air gaps; corona; electron attachment; finite element analysis; high-frequency discharges; secondary electron emission; 1 cm; 40 MHz; attachment effects; corona discharges; coronal development in air; diffusion effects; finite-element flux-corrected transport method; hyperboloid point-plane gap; negative ions formation; radio frequency discharges; secondary emission; secondary emission effects; simulation; steady state; streamers formation; transient development;

fLanguage

English

Journal_Title

Science, Measurement and Technology, IEE Proceedings -

Publisher

iet

ISSN

1350-2344

Type

jour

DOI

10.1049/ip-smt:20000224

Filename

838818