简介:AmethodofcurrentdrivewithIonCyclotronRangeofFrequency(ICRF)onEx-perimentalAdvancedSuperconductingTokomak(EAST)isdescribed.Avarietyofliquidsiliconoilheightsinthephaseshifterwillbringthephasedifferencetothecurrentdrive.Itisfoundthatthecurrentdrivecanbeachievedbyusingthephaseshifter.Theliquidphaseshifterisoneoftheimpedancematchingsystemstoo.
简介:Acomparativestudyoftheneedle-to-liquidplasmainthecontinuousmodewithDCandACexcitationsisdetailedinthispaper.Allplasmasstudiedhereareshowntobeglowdischarges.Thisstudyisbasedonmeasurementsofseveralkeyparameters,includingelectricalenergy,opticalemissionintensitiesofactivespecies,rotationalandvibrationaltemperatures,andtemperaturesoftheneedleandliquidelectrodes.ACplasmascanproduce1.2~5timeshigherexcitedstateactivespeciesthanDCplasmasunderthesamedissipatedpower.ACexcitedliquidplasmashavethehighestenergyutilizationefficiencyamongthethreesystems(ACexcitedplasmas,DCexcitedplasmaswithwateranodeandDCexcitedplasmaswithwatercathode);mostoftheenergyisusedtoproduceusefulspeciesratherthantoheattheelectrodesandplasmas.
简介:Liquidgasificationphenomenonwasobservableinliquid-soliddielectricbarrierdischarge(DBD)experiments.Startingfromclassicalthermodynamics,thisstudyaimedatfindingtilereasonofliquidgasificationintheDBDexperiments.Fluidstaticsandelectrohydrodynamicswereadoptedtoanalyzethemechanismofphasetransitionfromliquidtogas.TheSumotoeffectwasalsoemployedtovisuallyexplainthechangeinthepressureoffluidduetotheelectricfield.ItwasconcludedfromboththeoreticalanalysisandexperimentthatthechangeinliquidpressurewasakeyfactorcausingliquidtogasifyinDBDconditions.Furthermore,itwasstressedthattheliquidpressurewasaffectedbymanyparametersincludingliquidpermittivity,voltage,electricintensity,sizeofthedischargespaceanduniformityoftheelectricfielddistribution,etc.AllofthemaffectedDBDliquidgasification.Therelatedresultswouldprovideusefultheoreticalevidenceformulti-phaseDBDapplications.
简介:Theeffectofarcplasmaonelectrodeerosioninaliquidmetalcurrentlimiter(LMCL)isstudied.Basedonasimplifiedtwo-dimensionalmagnetohydrodynamicmodel,theelongatedGaInSnmetalvaporarcanditscontractionprocessinaliquidmetalcurrentlimiteraresimulated.Thedistributionsoftemperature,pressureandvelocityofthearcplasmaarecalculated.Thesimulationresultsindicatethattheelectrodeerosionismainlycausedbytwohightemperaturegasjetflowsarisingfromthepressuregradient,whichisaresultofthenon-uniformarctemperaturedistribution.Thegasflows,whichactasjetsontotheelectrodesurface,leadtotheevaporationoftheelectrodematerialformthesurface.Aredesignstructureoftheelectrodeisproposedandimplementedaccordingtotheanalysis,whichgreatlyincreasedtheservicelifeoftheelectrode.
简介:Chitosan(CTS)coatingscontainedcalcium(Ca)andphosphorus(P)ontitanium(Ti)surfacearepreparedbythecathodeliquidphaseplasmatechnology(CLPT),inacertainconcentrationelectrolytesolutionwithselectiveadditionsofammoniumdihydrogenphosphateandcalciumnitrate.Itisindicatedthattheparametersforastabledischargearevoltageof400V,frequencyof100Hz,dutycycleof30%basedonalargeamountofexperimentdata.Themorphology,structureandcompositionofthecoatedsamplesarestudiedbySEM,FTIR,XRD,XPS.Theresultsdemonstratethatthecompositecoatingsareuniform,andsomesolidparticlesofinorganicsaltcontainingcalciumandphosphorusdispersedonthecoatings.CAtestsshowthatthesamplestreatedbytheliquidplasmabecamelesshydrophilic.ThevariationofhydrophilicityontheCLPTtreatedtitaniumisattributedtothechangeofthefunctiongroupsonthesamplesurface.Meanwhile,apossibleformationmechanismofthecompositecoatingsisdiscussed.