Streamer branching on clusters of solid particles in air and air bubbles in liquids

We present the results from a two-dimensional computational investigation of the intersection of a streamer with solid particles and density fluctuations and gas bubbles filled with air and immersed in liquids. We consider the evolution of a streamer propagating along the vector of the applied exter...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 774; no. 1; pp. 12151 - 12156
Main Authors Babaeva, N Yu, Tereshonok, D V, Naidis, G V, Smirnov, B M
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.11.2016
Subjects
Air bubbles
Clusters
Electric fields
Liquids
Physics
Vertical orientation
Vertical polarization
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Summary:We present the results from a two-dimensional computational investigation of the intersection of a streamer with solid particles and density fluctuations and gas bubbles filled with air and immersed in liquids. We consider the evolution of a streamer propagating along the vector of the applied external electric field. The clusters of particles in air or bubbles in liquids have a symmetric form with branches elongated either in horizontal or vertical direction. The orientation of the cluster determines the branching patterns. We show that clusters having the prevailing horizontal branches facilitate streamer branching in liquids, while clusters in gases with vertical branches promote the splitting or reinitiating of a discharge filament. The phenomenon is mainly due to different polarization patterns of vertical or horizontal clusters in air and liquids and the ratio of dielectric permittivity of medium particle or medium bubble.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/774/1/012151