Underwater Electrical Discharge with a Large Surface of Radiation

Breakdown and formation of surface electric discharge in a zone of turbulent agitation of water jet transverse to the axis of an electrode system are studied. The jet boundary is actually a two-phase medium favorable for electron breeding consisting of cavitation microbubbles up to 10 7 cm -3 in vol...

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Published in:IEEE transactions on dielectrics and electrical insulation 2007-10, Vol.14 (5), p.1291-1294
Main Authors: Azizov, E.A., Emelyanov, A.I., Yagnov, V.A.
Format: Article
Language:English
Subjects:
Breakdown
Breakdown voltage
Cavitation
Circuits
Conductivity
Electric arcs
Electric breakdown
Electric discharges
Electrodes
Fault location
Freshwater
Microorganisms
Plasma measurements
Streams
Surface discharges
Threshold voltage
Water
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creator Azizov, E.A.
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Yagnov, V.A.
description Breakdown and formation of surface electric discharge in a zone of turbulent agitation of water jet transverse to the axis of an electrode system are studied. The jet boundary is actually a two-phase medium favorable for electron breeding consisting of cavitation microbubbles up to 10 7 cm -3 in volume. These features differentiate the considered discharge from a low-voltage breakdown in a stationary liquid. Abnormal properties of electric discharge in a submerged water stream take place both at the initiation and at the stationary stage. The threshold voltages are reduced by several times at the stream velocities of about 30 m/s, simultaneously the duration of the prebreakdown stage is reduced by one to two orders of magnitude. At the arc stage of the discharge, there is a developed emitting surface with plasma shell thickness being about 1 mm. The change of initial water conductivity by four orders of magnitude does not lead to large changes in breakdown dynamics.
doi_str_mv 10.1109/TDEI.2007.4339491
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The jet boundary is actually a two-phase medium favorable for electron breeding consisting of cavitation microbubbles up to 10 7 cm -3 in volume. These features differentiate the considered discharge from a low-voltage breakdown in a stationary liquid. Abnormal properties of electric discharge in a submerged water stream take place both at the initiation and at the stationary stage. The threshold voltages are reduced by several times at the stream velocities of about 30 m/s, simultaneously the duration of the prebreakdown stage is reduced by one to two orders of magnitude. At the arc stage of the discharge, there is a developed emitting surface with plasma shell thickness being about 1 mm. The change of initial water conductivity by four orders of magnitude does not lead to large changes in breakdown dynamics.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TDEI.2007.4339491</doi><tpages>4</tpages></addata></record>
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source IEEE Electronic Library (IEL) Journals
subjects Breakdown
Breakdown voltage
Cavitation
Circuits
Conductivity
Electric arcs
Electric breakdown
Electric discharges
Electrodes
Fault location
Freshwater
Microorganisms
Plasma measurements
Streams
Surface discharges
Threshold voltage
Water
title Underwater Electrical Discharge with a Large Surface of Radiation
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