DYNAMICS OF PREBREAKDOWN PHENOMENA IN A UNIFORM-FIELD IN WATER

被引：38

作者：

GAVRILOV, IM

KUKHTA, VR

LOPATIN, VV

PETROV, PG

机构：

[1] Institute of High Voltage, Tomsk, USSR

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 1994年 / 1卷 / 03期

关键词：

Bubbles (in fluids) - Dielectric materials - Dielectric relaxation - Dynamics - Electrodes - Electrohydrodynamics - Heating - Ionization - Models - Phase transitions - Thermodynamics - Water;

D O I：

10.1109/94.300293

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

For a breakdown time lag of 10(-7) to 10(-3), both slow subsonic and thin supersonic streamers were found to emanate from a point electrode in deionized water (sigma = 5 x 10(-5) S/m). The slow streamer-formed dendrite probably consists of gaseous microbubbles. Relaxation of the slow streamers was studied. The development of fast streamers resulted from kinetic phase transition in the liquid, with subsequent ionization of thin discharge channels. It was shown that heating of water and electrohydrodynamic flow do not affect the prebreakdown phenomena under these conditions. A model has been proposed of an anodic supersonic streamer which is generated by the plasma in the condensed medium.

引用

页码：496 / 502

页数：7