12 4 Maxwel Transient Fluent 2Way Coupling R145

Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

Thisworkshopshowshow ThisworkshopshowshowMaxwell2D Maxwell2Dtransientis2-w transientis2-waycoupled aycoupledwithFLUENT withFLUENT 3dsteadystate.Timeaveraged 3dsteadystate.Timeaveragedbutspatiallydistr butspatiallydistributiveOhmic ibutiveOhmiclossesinthe lossesinthe magnetsandcorelosses magnetsandcorelossesinthestatorand inthestatorandrotoraretransfer rotoraretransferredfromMax redfromMaxwell2D well2D toa3DmeshinFLUENTfortem toa3DmeshinFLUENTfortemperaturecalculation peraturecalculation.Thentem .Thentemperatureis peratureis mappedbacktoMaxwelltoaffec mappedbacktoMaxwelltoaffectelectricalc telectricalconductivityand onductivityandB-Hcurves B-Hcurves. . Demagnetizationisalsoturned DemagnetizationisalsoturnedoninMaxwell. oninMaxwell. Thisworkshopshowss Thisworkshopshowsstepsrelatedtotrans tepsrelatedtotransferringloss ferringlossesfromMaxw esfromMaxwellto ellto FLUENTanddoesnotcontain FLUENTanddoesnotcontaindetailsabout detailsaboutMaxwellorFLUE MaxwellorFLUENT.Please NT.Pleasereferto referto FLUENTUsers’Guideforinfor FLUENTUsers’GuideforinformationonF mationonFLUENTSetup LUENTSetup

MaxwellV16andFLUENT MaxwellV16andFLUENTV14.5need V14.5needtobeinstalledinor tobeinstalledinordertocarry dertocarryoutthis outthis workshop,whicharereleasesunderANSYSWorkbenchR14.5.  ANSYSWorkbenchneeds  ANSYSWorkbenchneedstobeinstalledfor tobeinstalledforthelosstransfer. thelosstransfer.

Geometryandmesh usedinsideFLUENT

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

TheMaxwellprojectcontainsa2DgeometryofaPriusmotor Thesetupofthismotorhasalreadybeenpartiallydone ToobtainmoredetailsaboutthesetuppleaserefertoExample11.1ofMaxwell 2DWorkshops

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

DoubletheMaxwellicon Orgoto

on

andlookforyourAnsoftinstallation.

andselect

Select Makethechangesaccordingtothepanel Name Nonlinear 625000 ThermalModifier 1.0-0.0010876*(Temp-20) 1.0-0.00647425*(Temp-20)

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

Click Select

andanswer

tothepop-upquestion.

Select andselecttheprovidedB-Hcurvefile, intrinsic_BH.tab.ThisistheintrinsicB-Hcurveatthereference temperatureof20C.

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

on

andselect

Select Makethechangesaccordingtothepanel ThermalModifier 1.0/(1.0+0.0068*(Temp-20))

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

Goto Makethechangesaccordingtothepanel

20Cisthe reference temperature

Goto

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

Goto

anddothesimulation.

Plot

ThisconcludestheMaxwellstandalonecalculation.

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

SelecttheMicrosoft

button,select

SinceweareusinganexistingMaxwellproject,wewillimportitintoWorkbench. UserscancreateanewMaxwellAnalysisSystemtosetupanewproblem. Selectthemenuitem Changethefiletypeto Browsetothelocationwhereworkshopinputfilesarelocated Selectthefile

and

it.

 AMaxwellanalysissystemwillbecreatedasshownbelow. Doubleclickonthe

tabofMaxwellanalysissystem.

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

Selectthemenuitem Thismaytakeupto5min.

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

Selectthemenuitem 1.

Select

2.

Select

3.

Select

4.

Select

5.

Specifythenameoftheexpressionas

6.

Press



Selectthemenuitem InReportwindow 1.

Category:

2.

Quantity:

3.

Select

4.

Press

5.

Choosetherangeasshowntoplottheresults.

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization Rightclickontheplotandselecttheoption InAddTraceCharacteristicswindow, 1.

Category:

2.

Function:

3.

Range:

4.

Select

and

Thevaluedisplayedisaround ItshowstimeaveragedTotalLossesforthestator Sincethisisa2Dcase,theselossesareinwattspermeter Weneedtomultiplythisvaluewithlengthofstatorinordertocalculatetrue losses.Sincethelengthis ,theactualtotallossforthestatoris:

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

Selectthemenuitem

Goto

toturnon

Betaoptionisneededfortwo-waytransientMaxwellsteadystateFluent coupling.

ReturntoWorkbenchProjectwindow Selectthemenuitem Savethefilewiththename

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

ExpandtheToolboxforComponentSystemsandselecta componentsystemfromit.DraganddroptheFLUENTSystemonProject page

 ACFDcasefilehasbeenprovidedwiththeworkshop.Thecasefilehasall propersetup.Thisworkshopwilldemonstratethelossmappingprocess. Rightclickon

tabofFLUENTAnalysissystemandselect

BrowsetothecorrectlocationandselecttheFLUENTcasefile andselect  AFLUENTLauncherwindowwillpopupasshowninbelowimage.Select andpress toit.  AFLUENTwindowwilllaunchandcasefilewillbeimportedintoFLUENT

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Maxwell

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12.4

PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

WithoutclosingFLUENTwindow,returntoWorkbenchprojectpage Draganddrop ofFLUENTsystem

tabofMaxwellAnalysissystemontothe

Rightclickon

tabofMaxwellAnalysissystemandselect

Press

tab

tothepopupwindow.

Goto ChangetheInitializationtypeto Press Itisnotnecessarytoinitializethesolutionbeforemappingthelosses fromMaxwell.Ifyouinitializethesolutionaftermappinglosses,mapping willberedoneautomatically

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

Selectthemenuitem InMaxwellMappingwindow, FLUENTCellZones:Press

andselectthe

zones

Start: Stop: Press

 Afterdatamapping,FLUENTwilldisplaythelossvaluesmappedto selectedzones Thelossesreportedforthestator(zone31and37)is

RememberthattotallossesforthestatorcalculatedfromMaxwellwas . Itcanbeverifiedthatlossesforotherregionsarealsocorrect.

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

Simulatefor20iterationsusingallsettinginthecasefile

Goto

anddoubleclick

InContourswindow, Filled: Contourof:

>

Surfaces:selectallperiodicandsolid(Tip:usingthe Press

)

and

Thewindingshavethehighesttemperatureasexpected.Thereisa temperaturegradientacrosstheairgap.Thethermalconductivityfortheairgap isincreasedtomodeltheenhancedheattransferatthegapduetomotion.

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Maxwell

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

GobacktoWorkbenchschematic of  Doubleclick

and tolaunch

Resettimetozeroandredotheanalysis RMBSetup1toresettimetozero. Thetorqueismuchlessduetomagnetbeingfunctionoftemperature. Displaytemperaturetoshowtemperaturedistributiononthemagnets.

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PriusMotor-Maxwell2DTransienttoFLUENT3DSteadyState 2-WayCouplingwithDemagnetization

12.4-‹#›