fluent-tut-19-Modeling Evaporating Liquid Spray.pdf

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1、Chapter19:ModelingEvaporatingLiquidSprayThistutorialisdividedintothefollowingsections:19.1.Introduction19.2.Prerequisites19.3.ProblemDescription19.4.SetupandSolution19.5.Summary19.6.FurtherImprovements19.1.IntroductionInthistutorial,theair-blastatomizermodelinANSYSFLUENTisusedto

2、predictthebehaviorofanevaporatingmethanolspray.Initially,theairflowismodeledwithoutdroplets.Topredictthebehaviorofthespray,severalotherdiscrete-phasemodels,includingcollisionandbreakup,areused.Thistutorialdemonstrateshowtodothefollowing:•Defineasprayinjectionforanair-blastatomiz

3、er.•CalculateasolutionusingthediscretephasemodelinANSYSFLUENT.19.2.PrerequisitesThistutorialiswrittenwiththeassumptionthatyouhavecompletedoneormoreoftheintroductorytutorialsfoundinthismanual:•IntroductiontoUsingANSYSFLUENTinANSYSWorkbench:FluidFlowandHeatTransferinaMixingElbow(p

4、.1)•ParametricAnalysisinANSYSWorkbenchUsingANSYSFLUENT(p.77)•IntroductiontoUsingANSYSFLUENT:FluidFlowandHeatTransferinaMixingElbow(p.131)andthatyouarefamiliarwiththeANSYSFLUENTnavigationpaneandmenustructure.Somestepsinthesetupandsolutionprocedurewillnotbeshownexplicitly.19.3.Pro

5、blemDescriptionThegeometrytobeconsideredinthistutorialisshowninFigure19.1(p.794).Methanoliscooledtoo−Cbeforebeingintroducedintoanair-blastatomizer.Theatomizercontainsaninnerairstreamosurroundedbyaswirlingannularstream.Tomakeuseoftheperiodicityoftheproblem,onlyasectionoftheatomiz

6、erwillbemodeled.Release14.0-©SASIP,Inc.Allrightsreserved.-ContainsproprietaryandconfidentialinformationofANSYS,Inc.anditssubsidiariesandaffiliates.793Chapter19:ModelingEvaporatingLiquidSprayFigure19.1ProblemSpecification19.4.SetupandSolutionThefollowingsectionsdescribethesetupan

7、dsolutionstepsforthistutorial:19.4.1.Preparation19.4.2.Step1:Mesh19.4.3.Step2:GeneralSettings19.4.4.Step3:Models19.4.5.Step4:Materials19.4.6.Step5:BoundaryConditions19.4.7.Step6:InitialSolutionWithoutDroplets19.4.8.Step7:CreateaSprayInjection19.4.9.Step8:Solution19.4.10.Step9:Po

8、stprocessing19.4.1.Preparation1.Extractthefilee