[Icepak培训上课用的基础教程[电子设备热设计]IcePak-Basic-TrainingPPT课件

IcepakBasicTraining,TrainingscheduleDay1,TrainingscheduleDay2,TrainingscheduleDay3,Overview,1.Overview,FluentInc.missionistoprovideflowandthermalanalysissoftwareandservicesthatgiveourcustomersasignificantcompetitiveadvantagebydramaticallyimprovingtheirdesignsanddesignprocesses,FluentInc.Woldwide,FLUENT6GeneralpurposefinitevolumebasedCFDpackagesuitableforincompressible/compressibleandlaminar/turbulentflows,includingreactingflowsandmultiphaseflowsFIDAPGeneralpurposefiniteelementbasedCFDpackagesuitableforincompressiblelaminar/turbulentflowsinvolvingNewtonian/Non-Newtonianfluids,freesurfacesandfluid-structureinteractionPOLYFLOWFiniteelementbasedCFDpackagesuitableformodelinghighlyviscousflows(asinrheology)andsurfaceflowsMixSimSpecializedCFDsoftwareformodelingmixingprocessesIcepakSpecializedCFDsoftwaredesignedforthermalmanagementofelectronicpackagesAirpakSpecializedCFDsoftwaredesignedforthermalmanagementofelectronicpackages,CFDsoftwaresfromFluentInc.,Icepakisanobject-basedmodelingsoftwareItallowsyoutobuildyourmodelfrom:primitiveobjectssuchasblocks,plates,fans,vents,resistances,etc.,orMacrossuchasICpackages,PCBs,radialheatsinks,detailedfantrays,etc.,Icepak:Object-basedSoftware,Steady/transientproblemsLaminar/turbulentflowsForced/natural/mixedconvectionMulti-fluidproblemsInternal/externalflowsConjugateheattransferRadiationheattransferFixed/moving/symmetryB.C.sTemperaturedependentproperties,Icepakscapabilities,Icepakscapabilities,PowerfulgridgeneratorcapableofUnstructuredconformalmeshStructuredmeshNon-conformalunstructuredmesh,MixedunitsUserdefinedlibraryofassembliesFileimportsfromMCADandECADpackagesDirectProE-IcepakinterfaceAdvancedpost-processingandreporting,SolutionfeaturessuchasParameterizationParallelprocessingGrid-to-gridinterpolationZoom-in-modeling,GETTINGSTARTED,Topics,HowtostartIcepakIcepakGraphicUserInterface(GUI)StartinganewprojectOpeninganexistingprojectIcepakfilestructurejob,modeldragbackintotheModelbranchtomaketheobjectactiveagainEmptyTrashtopermanentlydeletemodelobjects;postobjectsaredeletedwhendraggesintotrash,MouseFunctions,MouseFunctions:Mousebindings,IntheModelTree,expandtheOptionsbranchtoaccesstheMouseBindings,DoubleclicktoopentheMouseBindingsandmakenecessarychanges,ModelOrientation:Menuandicons,Orientpulldownmenuwith14options,ModelOrientation:Fixedaxesviews,Meaningoforientpositivex:OrientsuchthatthepositiveXaxispointsnormallyintothescreen;similarly,orientnegativeXandsoon.,OrientpositiveX,IsometricView,OrientnegativeY,OrientpositiveZ,ModelOrientation:Usingthemouse,Theorientationshowninthefigureabovewasobtainedbymousemovements(left:rotation,middle:lateral,right:zoom-in),ModelOrientation:Zoom/un-zoom,Zoomin:dragaboxaroundtheregion/objectsthatneedtobezoomedinto,Scaletofit:resizestheviewsuchthatthecabinetcompletelyfitsinthegraphicsdisplayarea;currentorientationisretained,Homeposition:isequvalenttoorientnegativezandscaletofit;isthedefaultviewwhenanewmodelisstarted,ScaletoFit,ModelOrientation:Otheroptions,Reverseorientation-horizontallyflipstheorientation(mirrorimage)Nearestaxis-changestothefixedorientationclosesttocurrentorientation;usefulwhenorientationischangedusingthemouse,SaveuserviewsavescurrentorientationunderthespecifiednameinthequeryboxClearuserviewsdeletesalluserviews,NearestAxis,ModelOrientation:Shortcuticons,Homeposition,Zoomin,Scaletofit,Singledisplay,Partitioneddisplay,Display/hideobjectnames,Interactivetools:Viewmenu,Viewmenucontainsseveralusefultoolsfor:GeometricmeasurementsViewoptionsGeometricmeasurements:Locationdisplaypoint*coordsinmessageswindowDistancedisplaydx,dy,dzanddistancebetweenselectedpoints*inthemessageswindowAngledisplayanglebetweenvectorsdefinedby3points*inthemessageswindowMarkersgraphicversionofLocationfunctionRubberbandsgraphicversionofdistancefunction,*Pointsshouldbeselectedwiththemousefollowingscreeninstructions,Rubberband,Interactivetools:Viewmenu,Viewoptions,Interactivetools:Viewmenu,Viewoptions(continued),Tracksmouse,“Snapto”grid(notmesh),Interactivetools:Interactiveeditingform,RecapmousefunctionsfortranslatingandresizingobjectsThisformcontrolshowthesemovementsareappliedMotionallowedmovementsonlyincheckeddirectionsRestricttocabinetObjectscannotpenetrateeachotherMovegroupwithobjects,Defaultmousetranslate/resizehascontinuousmovementinsteadof“grid-digitized”Specify“snapto”gridsizeforXgrid/Ygrid/Zgridmousemovementwillnowbe“grid-digitized”Cansnaptogridifthegridismadevisiblethroughmainmenu“ViewDisplayVisiblegrid”Newobjectsizefactorratioofnewobjectdimensiontocorrespondingcabinetdimension,defaultis0.2;newobjectwillbecentered,ModelBuilding:Geometry,3.ModelBuilding:Geometry,Topics,ObjectShapesinIcepakEditingfunctionsAlignmentfunctionsUnits,ShapesinIcepak:Shapesofsimpleobjects,3DshapesPrismCylinder:uniform/non-uniformPolygon:uniform/non-uniformBlockscanbeEllipsoid/EllipticalCylinder,2DshapesRectangularCircularInclinedrectangularPolygon,Plates,Openings,Grilles,Walls,Fans,Sources,Blocks,Resistances,HeatExch.,ShapesinIcepak:Alteringgeometriesofobjects,Theshape,position,sizeandorientationofanobjectmaybemodified:UsingtheCurrentObjectGeometry(COG)windowlocatedatthebottomrighthandcorneroftheGUIUsingthecurrentobjectseditform/geometrysectionGeometryofanobjectincludes:Shape,PositionandSizeLocalCo-ordinatesOrientationif2-D,ShapesinIcepak:Objectgeometrywindow,CurrentobjectsgeometricdetailsaredisplayedinthebottomrighthandcorneroftheGUIClickonApplyorEnterthekeyboardaftermakingchanges,Currentobject,ShapesinIcepak:Objectgeometrywindow,Name,GroupandShape,Coordinatesmaybeenteredbystart/endorstart/length,Optionsto:Applychanges,Resettodefaults,orEditobjectform,ShapesinIcepak:Optionsfor2Dshapes,Rectangular,Inclined,Canalsobedefinedbystart/angle,Changeangledirection,Positiondefinedbyco-ordinatesoftwopointsonthediagonal,ShapesinIcepak:Optionsfor2Dshapes,Polygonal,Circular,Optionstoincrease/decreasenumberofvertices,Selectvertexlocationwithmouse,Selectoptionsformouse,Fanscanalsohaveaninnerradiusforthehub,ShapesinIcepak:Optionsfor3Dshapes-Prisms,RegularPrism,Polygons-Uniform(highandlowfaceidentical),Polygons-Non-Uniform(highandlowfacenotidentical),Topandbottomfacescanhavedifferentnumberofvertices-butmustbeparallel,Samevertexoptionsasfor2D-polygonalobjects,ShapesinIcepak:Optionsfor3Dshapes-cylinders,UniformCylinder-noinnerradius,UniformCylinder-withinnerradius,Non-UniformCylinder-withinnerradii,InnerRadiussettomodelannulus,OuterandInnerRadiiontopandbottomofcylindercanbedifferent,ObjectModification,EditingObjects,OpensuptheEditpanelfortheselectedobject,Placestheselectedobject(s)inthetrashcan,OpensuptheMovepanelfortheselectedobject(s)Fromthemovepanel,youcanScaleMirrorRotateTranslate,OpensuptheCopypanelfortheselectedobject(s)Youcangroupthecopies,andalsohavesamefunctionalityasmoveavailabletoyou,ObjectAlignment:Icons,AlignFace-1DimensionalignedPlaneofFaceMatchedAlignEdge-2DimensionsalignedPlanesofEdgeMatchedAlignVertex-3DimensionsalignedCentreObject-BasedonCentroidCentreObject-BasedonFaceCentreMatchFace-2DimensionsMatchedMatchEdge-1DimensionMatched,TherearetwooptionsLeftClickonIconObjectgetsre-sizedduringalignmentRightClickonIconObjectsizeispreservedobjectismovedduringalignmentCanalsouseedit/alignmenttoolsinsteadoficons,ObjectAlignment:Icons,ObjectAlignment:Icons,ThealignmenttoolsallworkinthesamewayClickonIconorselectfrommenuChoosetheface/edge/vertexthatyouwanttochangewiththeLEFTMOUSEBUTTONTheselectionwillbehighlighted-ifthewrongonewasselected,thenjustclickagainandIcepakwillselectthenextface/edge/vertexOnceyouhavethecorrectselectionuseMIDDLEMOUSEBUTTONThenselecttheface/edge/vertexwithwhichtoalign/matchusingtheLEFTMOUSEBUTTONUponcorrectselectionacceptwiththeMIDDLEMOUSEBUTTONInstructionsfortheabovestepsaregiveninredinthebottomlefthandcornerofthedisplayareaAtanypointyoucancanceltheoperationwiththeRIGHTMOUSEBUTTON,ObjectAlignment:Coordinatesnapping,UsingCo-ordinatealignment:Nexttotheco-ordinatesofthegeometryintheCOGthereareoptionstosnapthatco-ordinatetoanexistingpointonanedgeinthemodel.Co-ordinatescanbe:Start(xS,yS,zS)End(xE,yE,zE)Length(xL,yL,zL)Centre(xC,yC,zC)Vertex,ToUse:Clickonthe“Orange”panelforaco-ordinate,andthenwiththemouseclickonapointinthemodel.Icepakwillthensetthatco-ordinatevaluetothepositionselected.,EditingObjects:theEditForm,ThecurrentobjectseditformcanbeopenedinthefollowingwaysDoubleclickingtheobjectinthetreeRightclickingtheobjectinthetreeandselecting“Editobject”fromthepulldownmenuSelecttheobjectinthetreeandclickthe“Openeditform”iconintheverticalModelToolbarFromthemainmenu,picking“Edit/Currentobject/Edit”Usingthekeyboardshort-cutctrl+lowercasee,4Sub-forms,OptionsCommontoAllSub-Forms,EditingObjects:GeometrySub-Form,Containsallgeometricinformation:ShapeLocalCo-ordinatesystem(ifany)OrientationLocation,Createnewlocalorigin,Checklocalorigin,Editalocalorigin,Selectlocaloriginfromexistingones,PullDownMenu,EditingObjects:PropertiesSub-Form,Containsallflow/thermalproperties:,Objecttype-eg:ThermalmodelBlockType,Thisareacontains:Solid/FluidandsurfacematerialspecificationBoundaryconditionsflowrates,powergeneration,temperatureSidespecificationAnyadditionalinformationrequiredtoimplementtheselectedobjecttype(eg:thickness),EditingObjects:InfoandNotesSub-Forms,NotesAnyrelevantadditionalinformationusermaywanttoadd,InfoNameCreationPriorityShadingetc.,Units,PhysicalquantitiescanbespecifiedinvariousdifferentunitsExamples:,Length,Temperature,Flowrate,Conductivity,Power,Units:GlobalUnits,Everyquantity(length/mass/etc)inIcepakhasadefaultglobalunitTochangetheglobalunitforaquantitygoundertheModelTree/Options/UnitDefinitionsandfollowthestepsshownbelow,UnitsofaquantitymaybechangedatanytimeduringmodelbuildingWhenglobalunitsarechanged,thenewunitsareappliedtonewobjectscreatedafterthechangeexistingobjectswillcontinuetousethepreviousunits,Units:ObjectSpecificUnits,ModelBuilding:IcepakObjects,4.ModelBuilding:IcepakObjects,Topics,SimpleObjects,NoflowobjectsCabinet(default)WallsBlocksPlatesSources,FlowobjectsOpeningsGrilleVolumetricResistances2D-FansHeatExchangers,MaterialsSolidFluidSurface,CompositeObjects,3DFansEnclosuresPCBsAssemblies,HeatSinksPackagesNetworks,CreatingNewObjects,WaystocreateandpositionobjectsinIcepakClickonobjecticonandeditit,orusethealignmenttoolstocreateitDragtheobjecticonintographicsdisplayareaIfusingthisoption,itissensibletoseta“snap”gridinOptions/Interactivemenutoensurethatre-location/positioningislimitedtothesnapgrid.Forexampleyoumaysetthesnapto1mmthenpositionislimitedtonearestmmChangeobjecttypeetc.,TochangepropertiesofanobjectSelecttheobjectEnterchangesintheobjecteditformdiscussedintheprevioussection,DefinesthecomputationaldomainitisalwayscuboidalshapeExistsbydefaultwhenanewmodelisstartedDefaultdimensions:1x1x1m3(orequivalentinotherunits)Defaultfornewobjects-theywillbe1/5ththecabinetsizeandcenteredNoobjectmaywhollyorpartlyexistoutsidethecabinetawarningmessagewillprompttheuserforanactionasinthefigurebelow,Undotheoperationthatcausedtheobjecttogooutofcabinet,Objectcanremainoutsidetemporarily,butthismessagewillreappear,AutoscalebuttoninthecabinetformorCOGresizesthecabinettojustfitallobjectsinthemodelScaling/movingthecabinetusingthemoveformscales/movestheentiremodel,Cabinet,Cabinet:Properties,Defaultcabinetproperties:WallsareadiabaticWallshavezerovelocity,Overcometheseconstraintsbyplacingfollowingobjectsoncabinetsides:wallsenergytransferonlyopenings,ventsandfansflowandenergytransferThecabinetformletsyouimposeanyoftheseobjectsontheentireside(s)ofthecabinettheseobjectswillautomaticallyresizewhenthecabinetsizeischanged,Walls,CanonlybeplacedoncabinetsidesoronfacesofhollowblocksInnersideofwallsseethefluid,whileoutersidesfacetheexteriorconditions,ThreeTypes:StationarySymmetryMoving,WallthicknessmayberealoreffectiveExternalmaterialisalwaysspecifiedSolidandinternalsurfacearespecifiedonlyforwallswiththickness,Solidmaterial,Surfacematerials,DefaultIcon:,Defaultcolor:Grey,Walls:Thermaldata,DefaultIcon:,Defaultcolor:Grey,StationarywallsmayhaveheattransferspecificationtotheoutsideOutsideheatfluxOutsidetemperatureExternalconditions/heattransfercoefficient,Symmetrywalls-reducemodelsizewhenthemodelissymmetricaboutaplaneAdiabaticandFrictionlessZerofluxandflowthroughwall,Canspecifyspatiallyvaryingprofile,Movingwalls-accountformotionintheplaneofthewallThermalinputsofstationarywallsWallvelocityvector,Blocks,DefaultIcon:,Defaultcolor:Pink,CanbemeshedwitheitherMesher,MustbemeshedwithTetrahedral-Mesher,Blocks:Thermalmodels,DefaultIcon:,Defaultcolor:Pink,4ThermalModels,HollowblocksNomeshwithintheblocknoequationssolvedinsidehollowblockNoheatconductionintheplanardirectionalongthesidesoftheblock,HollowPolygonblocksusedtomodifydomain,Usesofhollowblocks:MaskoffregionsofthedomainSimplifiedrepresentationofmodules,Blocks:Thermalmodels,DefaultIcon:,Defaultcolor:Pink,SolidblocksVersatileuses-canbeusedforalmostanysolidcomponentOpenings/fans/ventswillcutthroughsolidblocksiftheirdimensionsaresmallerthantheblockFluidblocks-usesMulti-fluidmodelsCarveoutportionsfromsolidblocksNetworkblocksHollowblockwiththermalresistancenetworkinsidetheblock4Typesofnetworks(Tworesistor,Star,ShuntandGeneral)NetworkvaluesvisibleuponselectingblockUsesofnetworkblocks:Simplifiedrepresentationofpackages/prismaticcomponentswithheatgeneration,Blocks:Thermaldata,DefaultIcon:,Defaultcolor:Pink,SurfacedataallblocktypesRadiationDiscussedLaterIndividualSideSpecificationsThermalProperties-TotalPower,FluxorFixedTemperatureHeattransfercoefficienttomodelconductanceperunitareacontactresistanceRadiationspecificationforaside,Blocks:Thermaldata,DefaultIcon:,Defaultcolor:Pink,Thermaldata-SolidandfluidblocksMaterialspecificationTotalpoweruniformthroughthevolumePoweroptionstemperaturedependence,Jouleheating,transientpowerNote:Inmulti-fluidproblems,fluidblocksmustnothaveacommoninterfaceNetworkblocksMarktheboardsideJunctionpowerResistancevaluesHollowblocksAdiabaticinsideandonsurfaceNoHeatTransfertootherobjects,Plates,DefaultIcon:,Defaultcolor:Orange,6Thermalmodels:ConductingthickforcompactPCBs,solidobjectswithsmallthicknessConductingthinforsolidobjectswithsmallthickness,thinlayers(givesreducedmeshcount)Contactresistanceforadhesives,interfacematerialsAdiabaticthinforbaffles,non-conductingenclosuresHollowthickandFluididenticaltohollowblocksandfluidblocks,Surfacethermaldata:Only2facesavailablecannotspecifydataforthe“edgefaces”Heattransfercoefficient/contactresistancecanbespecifiedNopoweronindividualsidesLocalRadiationcontrols,Plates:Thermalmodels,DefaultIcon:,Defaultcolor:Orange,Conductingthick:PlatethicknessismodeledandmeshedPoweroptionsconstant,temperaturedependence,Jouleheating,transientpower,Conductingthin:PlatethicknessiseffectiveonlynomeshinthethicknessConductioninboththein-planeandthroughplanedirectionsConstantpoweroption,Contactresistance:PlatethicknessiseffectiveonlyConductioninthethrough-planedirectiononlyConstantpoweroption,Adiabaticthin:NoplatethicknessPlatesurfaceisadiabaticnoheattransferorpowergeneration,Hollowthick:Identicaltohollowblockexceptsurfacedatacanbespecifiedinonly2faces,Fluidplate:ThicknessismodeledandmeshedNopowerspecificationorsurfacedataUsedtopunchthroughathickplate,SolidBlocksvsSolidplates,Followingaredifferencesbetweensolidmodelsofblocksandplates,Sources,DefaultIcon:,Defaultcolor:Green,Sourcescanhave2Dor3DshapesSourcematerial=materialoftheobjectitismountedon/inNoFlowacrossthefaceofa2Dsource2DSourcescanalsoradiatePowercanbespecifiedastotalpower/powerdensity/fixedtemperaturePowerflux(2Dsources)canbespecifiedasaspatiallyvaryingprofile(x,y,z,value)Totalpowercanbetemperaturedependentwithinaspecifiedsourcetemperaturerangeeg:power=3.0WforTs30oC,but=3.0+2.0(Ts30)for30oCTs40oCJouleheatingonlyforvolumetricsourcesUsespowersources,packages,dies,componentfoot-print,Openings:Freeopenings,DefaultIcon:,Defaultcolor:Yellow,TwoTypes:Freeopenings-FlowandThermalData:X,Y,Zvelocitycomponents,temperature,staticpressureFixedvaluesorspatiallyvaryingprofilesFlowconditionsappliedonlywhenplacedoncabinetsidesorhollowblockfacesDrillholesthroughthick/thinsolidobjectswhenplacedwithinamodelNOTE:Settingbothvelocityandpressureinputsshouldbeavoidedasthismayleadtoinconsistentorover-specifiedboundaryconditionsUses:NaturalConvectionboundariesComputationalwindtunnelwhereinletvelocityorpressureprofileisknown,Openings:Recirculatingopenings,DefaultIcon:,Defaultcolor:Yellow,Uses:Asa“black-box”heatexchangerSimplifiedmodelforcircularpipebendsFixedflowrateinternalfan,Recirculatingopening-acombinationofasupplyandanextractExtracttakesflowfromdomainSupplysuppliesthesameflowtodomainNoCFDequationssolvedasflowgoesfromextracttosupplyHeatlossorgainmayoccurbetweenextractandsupplyopeningsBothextractkZ=0.3W/m-K,Materials,DefaultIcon:,Defaultcolor:None,NewmaterialsaresavedwiththeprojectandareonlyavailablewithinthatprojectMaterialscanbesavedtoformalocallibraryModel/CreatemateriallibraryChoosethematerialsyouwanttosaveoutToautomaticallyloadupalocallibraryAddanewlibrarycontainingmaterialstothemodel,MainMaterialLibrary,ModelSpecificMaterials,Groups,GroupsfeatureallowsgroupingofobjectsTocreateagroupselectobjectsfromthemodeltree,thenrightclickandselect“Creategroup”optionrightclickthe“Groups”branchinthetreeandcreateanew(empty)group,thendragobjectsintothegroup,Operationsongroups:RightclickanexistinggrouptoseethegroupfunctionsAdd/removeobjectsCopy/movegroupSimultaneouslyeditgroupcontents(ensurecontentsaresametype/sub-type)Activate/Deactivate/Deleteallcontents,etcDeletingagroupwillonlydeletethegrouping,nottheobjectsinthegroup,3-DFan,DefaultIcon:,Defaultcolor:Cyan,Simulatesthecowlingandhuboffan,andaddsoptiontospecifypressuredropduetofanguard.Createsasingleobjectmadeupofthefan,ablockforthecowlingandablockforthehub(ifpresent).InGeometryentertheSizeandThicknessofthecaseandlocationrelativetofanface.InpropertiesspecifytheGuardFreeAreaRatioandhubpower,Enclosures,3D-boxlikeobjectmadeupofplatesSidescanbeopenorclosedClosedsidescanbethinorthickplatesOpensidesarefreeboundariesCanassignpowerandradiationtothecl