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BladeGen
HPCompressorImpellerwithSplitter带小叶片的高压比压气机叶轮Concepts
概念Inthistutorialwewill:InputinitialdesignparametersInputinitialangle/thicknessparametersOptimizethemeridionalviewAdjustthebladeanglesDefinetheshapeofLEandTESaveyourworkInitialDesignParameters
初始化设计参数CFX-BladeGenallowstheusertocreateabladesystemfromscratch,usingoneofsixstandardinitialconfigurationtypes.Forthisexample,aRadialImpellerisused.SelecttheFile|New|CFX-BladeGenModelmenucommandortoolbarbuttonwhichwilldisplaytheInitialMeridionalConfigurationDialogSelecttheRadialImpellertabEntertheparametersfortheinitialbladelayout(shownonthefollowingslide).BesuretoselectAng/ThkmodeinthebottomrightcornerPressEnterorselecttheOKbuttontocontinueDesignParameters
设计参数定义DesignparameterstobeenteredfortheRadialImpellerTemplate:InitialAngle/Thickness
叶角和厚度初始定义EnterInitialAngle/ThicknessParameters:Nominalwrapangleof85°包角85°Thicknessof3mmNumberofblades:6ClickOKMeridionalViewOptimization
子午面视图优化OptimizingtheMeridionalView优化子午面视图InletandOutletlocation(points)havetobeadjustedinordertoextendtheinletinupstreamandtheoutletindownstreamdirection延长进出口InletandOutletModification
进出口修改Doubleclicktheshroudinletpoint(topleft)
Enter-45and69forthehorizontalandverticalvalues.ClickOK.Forthehubinletpoint(bottomleft),enter:-45and30ClickOKFortheshroudoutletpoint(topleft),enter:82and175ClickOKForthehuboutletpoint(topright),enter:86.5and175ClickOK
BladeAnglesattheHub
轮毂叶角TheHubLayerisactivebydefault(reddot)Right-clickintheAngleviewandselect:AdjustBladeAnglesIntheLeadingEdgetab,enter40ºfortheBetavalue.Tang.Betaautomaticallybecomes50º.Leavealltheothervaluesastheyare.IntheTrailingEdgetab,enteraBetaangleof30º.LeaveThetaangle85ºClickOKBladeAnglesattheShroud
机匣叶角ActivatetheShroudLayerbyclickingtheblackdotatthetopofthelayercolumn(itwillbecomered)Right-clickintheAngleviewandselect:AdjustBladeAnglesIntheLeadingEdgetab,enter62.5ºfortheBetavalue.Leavealltheothervaluesastheyare.IntheTrailingEdgetab,enteraBetaangleof30ºandThetavalueto84º.Leaveallothervaluesastheyare.ClickOKBladeAngleDistribution
叶角分布Afterthebladeangleadjustments,theangledistributiononthehubandshroudwilllooklikeaspresentedbelow:HubShroudBladeThicknessProfile
叶片厚度剖面BladeThicknesscanbedefinedintheThicknessview.Inthisexample,thethicknesswillbeconsideredconstantwiththevalueof3mm.Nomodificationwillberequired.ShapeofLeading/TrailingEdge
导缘和尾缘形状ToprescribetheLeading/TrailingEdgeShape:SelectBlade|PropertiesmenucommandsorthetoolbarbuttonlocatedonthelefthandsideoftheCFX-BladeGenwindowtosetthebladeproperties.SetthevaluesonLE/TEEllipse(椭圆)tabasshownonthenextslideAllothervaluescanremainunchanged.
BladePropertyDialog
叶片属性对话框SelectLETypetobeEllipsewithappropriateEllipticRatiosSelectTETypetobeCut-offAddingSplitterBlade
增加分离叶片SelecttheBlade>AddSplittermenucommandorthetoolbarbuttontogetBladePropertyDialogueDefaultvaluesintheLocation/Definitiontabwillbeused,sothatthesplitterwillbeplacedatthemainblademid-pitchThisisobtainedbyselectingOffset(PitchFraction)tobe0.5indefinitionoftheSplitterAngularOffset
SplitterBladeLE/TEshape
分离叶片导缘/尾缘形状SelecttheLE/TEEllipsetabandsettheLEEllipticRatioto4forbothhubandshroudIntheLE/TECut-Off,enabletheLEoptionandenter0.35forthehuband0.4fortheshroud.ClickOKAfterAddingtheSplitterBladeAfterthesplitterbladehasbeencreated,therearesomenewfeaturesintheGUItonote,asshowninthenexttwoslides.IntheMeridionalview,thesplitterLeadingEdgewillbeshown.IntheAuxiliaryview,thesplitterbladewillbeshownlocatedatthemid-pitchbetweenmainblades.ThelocationofthesplitterLeadingEdgewillalsobeshowninangleviewandThicknessview.GraphicalLayoutattheHubGraphicalLayoutattheShroudModelPropertiesDialogSetthemodelproperties:Model>PropertiesEnsureModelUnitsareSetSavingtheFileSavethefileFile>SaveAsortheSaveAsiconFilename:HPCompressorImpeller.bgdGobacktotheProjectpageandopenDesignModeler(clickNewgeometry)UsethesameunitsthatweredefinedinBladeGen(mm)BladeEditorClicktheBladeEditoriconAcceptthedefaultfileHPCompressorImpeller.bgdWewantthefluiddomainforaCFDanalysisIntheDetailsViewChangeHubOffsetto2mmSetCreateBladesto1ClickGenerateSavethemodelHPCompressorImpeller.agdbSuggestionsforExtr
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