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基于CFX的微型喷气发动机燃烧室流态研究.docx

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基于CFX的微型喷气发动机燃烧室流态研究 Title:FlowFieldAnalysisofaMicro-JetEngineCombustionChamberBasedonCFX Abstract: Micro-jetenginesplayasignificantroleinvariousapplicationsrangingfromunmannedaerialvehiclestoportablepowergenerators.Thecombustionchamberisacriticalcomponentthatdeterminestheengine'sperformance.Thisstudyaimstoinvestigatetheflowfieldwithinamicro-jetenginecombustionchamberusingComputationalFluidDynamics(CFD)software,namelyCFX.Theanalysisinvolvestheexaminationofkeyflowparameterssuchasvelocitydistribution,pressure,andtemperatureprofiles.Thefindingsofthisresearchwillcontributetotheoptimizationofthecombustionchamberdesignandoverallperformanceofmicro-jetengines. 1.Introduction: Micro-jetengineshavegainedpopularityduetotheircompactsize,highpowerdensity,andversatility.Acriticalcomponentoftheseenginesisthecombustionchamber,wherefuelisinjected,mixedwithair,andignitedtoproducethrust.Theflowfieldwithinthecombustionchambersignificantlyaffectscombustionefficiency,emissionlevels,andoverallengineperformance.Therefore,understandingandanalyzingtheflowbehaviorwithinthecombustionchamberiscrucialforoptimizingmicro-jetenginedesign. 2.Methodology: Toanalyzetheflowfieldwithinthemicro-jetenginecombustionchamber,theCFDsoftwareCFXisemployed.CFXprovidesapowerfultooltomodelandsimulatefluidflowbehaviorandcombustionincomplexgeometries.Thecomputationaldomainisdiscretizedintoamesh,wherethegoverningequationsoffluidflowandcombustionaresolvednumerically.Thecombustionchambergeometry,includingitsinlet,outlet,andinjector,isaccuratelymodeledtosimulaterealisticflowconditions. 3.FlowFieldAnalysis: Theflowfieldanalysisencompassestheinvestigationofvariousflowparameters,suchasvelocitydistribution,pressurevariation,andtemperatureprofileswithinthecombustionchamber.Thevelocitydistributionprovidesinsightsintothedirectionandspeedoftheflow,whichinfluenceturbulence,fuel-airmixing,andcombustionefficiency.Pressurevariationsreflectthecompressionandexpansionprocessesoccurringwithinthechamber,affectingengineperformance.Temper