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自激振荡脉冲射流雾化的机理分析.docx

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自激振荡脉冲射流雾化的机理分析 Title:MechanismAnalysisofSelf-ExcitedOscillatingPulseJetAtomization Abstract: Thispaperaimstoprovideadetailedanalysisofthemechanismbehindself-excitedoscillatingpulsejetatomization.Thestudybeginsbyexploringtheconceptofatomizationanditsapplications,followedbyanexplanationoftheprinciplebehindself-excitedoscillatingpulsejetatomization.Theprimaryfactorsinfluencingtheatomizationprocessandtheresultingspraycharacteristicsarediscussedandaseriesofexperimentsareconductedtovalidatetheproposedmechanism.Thefindingsrevealthatself-excitedoscillatingpulsejetatomizationisapromisingtechniqueforvariousindustrialapplications. 1.Introduction Atomizationisafundamentalprocessfortheconversionofliquidintoafinespray,oftenusedinnumerousindustriessuchasagriculture,pharmaceuticals,automotive,andindustrialcoating.Traditionalatomizationmethodsincludepressure-swirl,plain-orifice,andair-assistedtechniques.However,thesemethodsmayhavelimitationsintermsofdropletsizedistributionandspraypatterncontrol.Onepromisingtechniquethathasgainedconsiderableattentionisself-excitedoscillatingpulsejetatomization,wheretheatomizationoccursduetotheself-sustainedoscillationswithintheatomizer. 2.PrincipleofSelf-ExcitedOscillatingPulseJetAtomization Self-excitedoscillatingpulsejetatomizationisbasedontheprincipleofself-excitedoscillations,whicharegeneratedbytheinteractionbetweentheliquidjetandthesurroundinggas.Initially,aliquidjetisinjectedintotheatomizercavitythroughasmallnozzle.Theimpingementoftheliquidjetonthecavitywallcreatesahigh-pressureregion,resultingintheformationofanoscillatingwaveonthesurface.Theseoscillationsinducethebreakupoftheliquidjetintoafinespray. 3.FactorsAffectingAtomizationProcess Severalfactorsinfluencetheatomizationprocessandtheresultingspraycharacteristicsinself-excitedoscillatingpulsejetatomization.Thesefactorsincludetheliquidproperties(viscosity,surfacetension),nozzlegeometry(orificediameter,shape),gasflowrate,cavitypressure,andexcitationfrequency.Understandingthesefactorsiscrucialf