静电式电焊烟尘净化器电流体场的数值模拟

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1、东华大学硕士论文NUMERICALSIMULATIONoFTHEELECTROHYDRAULICFIELDINELECTROSTATICWELDINGSMOKEPURIFIERABSTRACTInmachinery，construction，railway，automobile，shipbuilding，aviationindustryandSOon，weldingtechnologyisaverycommonmethodofmechanicalprocesss．Whilefinishingtheweldingtask，thew

2、eldingprocesswillproducealotofweldingfumes，harmfulgasesandthearclightradiation，whichcanleadtoavarietyofoccupationdiseases．Welders’pneumoconiosiscausedbyweldingfumeshasbecomeamajoroccupationdiseaseintwenty-firstCentury,seriouslyendangeringthehealthofweldingworkers．Now

3、astheCOUrttrypaysmoreattentiontotheenvironmentalprotectionandlaborprotection，higherrequirementsontheairqualityoftheweldingworkshopwillbeputforward．Inordertoimprovetheworkers’workingenvironmentandprotecttheirhealthofbodyandmind，thecatcherandpurificationoftheweldingsmo

4、keanddustareparticularlyimportant．Especiallythemethodofpurifyingnearthepestsoccurrencepointintime，ismostdirectandmosteffective，whichtheweldingsmokepurifiercanachieve．inordertofurtheroptimizethestructuralparametersandoperationalparametersoftheweldingsmokepurifierandpr

5、ovidetheoreticalreferenceandbasisforitsdesign，thisarticleusesCOMSOLMultiphysics4．2a，whichisakindofmultiplephysicalfieldssimulationsoftware，tocompletethenumericalsimulationstudyontheelectrohydraulicfieldofthechargedareainelectrostaticweldingsmokepurfier，onthebasisofpr

6、evioustestsandtheoreticalstudy．ItUSeSelectrostaticmodeltosimulatetheelectricpotentialdistribution，singlephaselaminarincompressibleNavier-Stokesmodeltosimulatetheflowfielddistributionandcoefficientmodelofpartialdifferentialequationstosimulatechargetransport．Aimedatthe

7、symmetricstructureofchargedareainthepurifier,itusesthetwo—dimensionalmodelandsimplifiestheairflowofthechargedareainareasonablemanner．Inthecaseofotherconditionsunchanged，bysettingdifferentcoronavoltages，platedistances，coronawirediametersandthewindspeedsofentranceincha

8、rgedarea，itobtainsthecharacteristicsofelectrohydraulicfieldinchargedareaunderthedifferentconditions，andanalyzestheresults．Theconclu