DNS of the evaporation with OpenFOAM analysis of the interactions between droplets

DNS of the evaporation with OpenFOAM analysis of the interactions between droplets

ID:40352224

大小:4.94 MB

页数:42页

时间:2019-07-31

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1、1stWorkshopon”SingleandTwo-PhaseFlowSimulationswithOpenFOAM:ModellingandNumericalissues”April7-8,2009DNSoftheevaporationwithOpenFOAM:analysisoftheinteractionsbetweendropletsDr.–Ing.BrunoFrackowiakTECHNISCHEUNIVERSITÄTDARMSTADTPresentationsummary•Introduction•Previoussimulationsusi

2、ngFluent•ComputationoftheexternalflowwithOpenFOAM•Resultswiththeisolateddropletcase•Resultswiththemonodispersestream•ConclusionetperspectivesTECHNISCHEUNIVERSITÄT1stWorkshopon”SingleandTwo-PhaseFlowSimulationswithOpenFOAM:ModellingandNumericalissues”April7-8,2009DARMSTADTPresentat

3、ionsummary•Introduction•PrevioussimulationsusingFluent•ComputationoftheexternalflowwithOpenFOAM•Resultswiththeisolateddropletcase•Resultswiththemonodispersestream•ConclusionetperspectivesTECHNISCHEUNIVERSITÄT1stWorkshopon”SingleandTwo-PhaseFlowSimulationswithOpenFOAM:ModellingandN

4、umericalissues”April7-8,2009DARMSTADTIndustrialcontextContinuousphase:Flowinacomplexgeometry,vaportransport,combustionCombustionchamberperformancesimprovementDispersedphase:Dropletsevaporation,effectPollutantsemissiononcontinuousphase,combustiondecreaseCompleteDNSimpossible!!!TE

5、CHNISCHEUNIVERSITÄT1stWorkshopon”SingleandTwo-PhaseFlowSimulationswithOpenFOAM:ModellingandNumericalissues”April7-8,2009DARMSTADTTwophasesflowCFDNumericaldroplettrajectoryV.gBassetBoussinesqOseenequationmimplyingdragcoefficientCdQltotaldVg12()m=πDgρCdV−VgV−Vg+mgdt8Numericald

6、ropletNumericaldropletevaporationsourcetermsofheatfluxQltotalandvaporflowratemɺinthegasphaseCombustionchamber:EvaporationmodelsfortheliquidSpraymodelledbyphasedropletparcelsCorrectionstotakeintoaccounttheinteractionsbetweendropletsTECHNISCHEUNIVERSITÄT1stWorkshopon”SingleandTwo-

7、PhaseFlowSimulationswithOpenFOAM:ModellingandNumericalissues”April7-8,2009DARMSTADTAdoptedSimpleconfigurationadaptedtotheevaporationphenomenonstrategyNon-intrusiveopticalCompletenumericalmeasurementssimulationFrangesd’AiryStructuresondulatoiresComparisonoftheresultsParametricalstu

8、diesCorrelationsfortheSimplifiede

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