Boundary Effect of Planar Glow Dielectric Barrier Discharge and Its Influence on the Discharge Structure-中国期刊网

摘要 Thedielectricbarrierdischarge(DBD)intheglowregimeinneonhasbeeninvestigatedbyexperimentandtwo-dimensional(2D)fluidmodeling.ThedischargewascarriedoutinaplanarDBDsystemwithsegmented-electrodesdrivenbysquare-wavevoltage.TheresultsshowthattheglowDBDoriginatesinthecenteroftheelectrodeandexpandsoutwardtotheelectrodeedgeduringeachhalfcycleofthevoltage,formingaradialstructure.Thedischargedecaysfirstlyintheinnerareabutsustainslongerintheedgearea,showingareverseddischargearea.Thedischargecannotcompletelycovertheentireelectrodesurface,butremainsaborderofnon-orweakdischarge.Thefluidmodelingshowsasimilarresultinagreementwiththeexperiments.Thesimulationsindicatethattheelectricfieldintheedgeareaisdistortedduetotheboundaryeffectsothattheelectricfieldandchargedistributionaredifferentfromthatintheinnerpart.Thedistortedfieldreducesthelongitudinalcomponentneartheedgeandcausesthelocalfieldtobelowerthanthatinthecenter,andhencemakesthedischargebehindhand.Italsoinducesatransversefieldthatmakesthedischargeextendradiallyoutwardtotheedge.TheboundaryeffectplaysanimportantroleintheglowDBDstructure.

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Boundary Effect of Planar Glow Dielectric Barrier Discharge and Its Influence on the Discharge Structure

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Boundary Effect of Planar Glow Dielectric Barrier Discharge and Its Influence on the Discharge Structure

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