Lecture 7 - Computational Domain & Solving――FloEFD

.Lecture7ComputationalDomain&Solving120.•Size•BoundaryCondition•ColorSettingThecomputationaldomainisarectangularparallelepipedforboththe3Danalysisand2Danalysis.ComputationalDomainFlowAnalysis-ComputationalDomain121.BoundaryConditiontabandselecttheSymmetryconditionforthecorrespondingboundaries(AtXmin,orAtXmax,etc.)SymmetryPlanes122.BoundaryConditiontabandselectthePeriodicityconditionforoneoftheboundariesinthedesireddirection(AtXmin,orAtXmax,etc.).ROWOFCOOLINGPLANEAIRFOILSPeriodicBoundaryConditions123.•Ifyouwanttosolveaplane(2D)flowproblemintheYZ-,orXY-,orXZ-plane,selectthecorrespondingplaneflowinthe2DplaneflowlistontheBoundaryConditiontab.2DPlaneFlow124.•AllowsustoselectaclosedfluidregiontodefineaFluidSubdomainwithfluidtypeand/orselectedfluidsotherthanthosespecifiedinWizardorGeneralSettings.•Thesubdomainiscompletelyrecognizedafterselectionofatleastonegeometricalpart(e.g.thepipeinlet)•Thefluidregionswithdifferentfluidtypesmustbeseparatedfromeachotherbysolidregion(s).FluidSubdomain125.FlowAnalysis-Insert-FluidSubdomain126.SolvingFlowAnalysis-Solve-Run127.•Createmesh–Ifyouwanttoseethecompletecomputationalmeshbeforerunningthesolver,selecttheCreatemeshcheckboxonlyandaftermeshgenerationvisualizewithacutplot.•Solver–Newcalculation–ContinuecalculationIfyouintendtostartthenewcalculationusingpreviouscalculationresultsasaninitialcondition,selecttheNewcalculation,Createmesh,andTakepreviousresultscheckboxes.128.Important!WhenneedtoCreate(new)Mesh?•Even,iftheCADgeometryhasnotchanged:whenthe“topology”ofthemeshhaschangedanewmeshisnecessary.Themeshdoesnotonlydescribegeometry,butalsologicconnections.–Boundaryconditionsaddedorremoved–Materialassignmentofaparthaschanged–Thermalresistancesareaddedorremoved•Nonewmeshusuallyhastobecreated,ifjustavalueofapropertyhaschanged129.Solveasetofprojectsinaprescribedorder.Youcanincludeprojectsofanycurrentlyopendocument.•CurrentSession.thesolverwillsharetheavailablememorywiththeCADapplication.•Ifyouselectthenameofthecurrentcomputer,thesolverwillrunasastandaloneprocess.•Ifyouselectthenameofthecomputerfromthelocalnetwork,thesolverwillrunonthiscomputer.BatchRun130.SpecifyingComputersforNetworkSolving•ThenetworkcomputermusthaveanyofthefollowingEFD.Labinstallations:Individual,Client,Server+Client,orSolverOnly.•Thenumberofcalculationstoberun(aseitheronthecurrentcomputerorintotalonnetworkcomputers)cannotbemorethanNo.ofsolverInstancesspecifiedinthelicensefile.131.MonitoringCalculation•Suspendorstopthecalculation,manuallyinitiaterefinementoftheexistingcomputationalmesh,changetheCalculationControlOptionsanddisplaythecurrentresultsduringthecalculation.132.–Calculation,Stoptostopthecalculation–Calculation,Suspendtosuspendorresumethecalculation–File,SaveandClosetostopcalculation,savethecurrentresultsandclosethemonitor.–File,SaveCurrentResults.Resultsarealsoautomaticallysavedwhenthecalculationisfinished.133.•Duringthecalculationyoucanobtainvariousinformationaboutthecalculationprocess.ClickInsertandselectoneofthefollowingitems:–Log.Displaysthehistoryofthecurrentcalculation.–Information.Displaysmeshstatisticsandinformation.•Advice:waitatleastfor1travel,beforemanualstopping134.–GoalTable.Showsthelistofallspecifiedgoals,theircurrentvalue,progressofconvergence,andthegoal’sdispersion(Delta)determinedovertheanalysisintervalandthegoal’sCriterion135.–Preview.Allowsyoutoviewthecurrentresultsonthespecifiedplane.136.–GoalPlot.showsthegoalconvergencediagram,currentparametervalue,progressofgoalconvergence,andthegoal’sdispersion(Delta)determinedovertheanalysisintervalandthegoal’sCriterion.137.–Min/MaxTable.Displaystheminimumandmaximumparametervaluesatthecurrentiterationcalculatedovertheentirecomputationaldomain.–RefinementTable.Displaysinformationaboutperformedsolution-adaptiverefinements.–Summary.Displaystheprojectgeneralsettingsandinputdataspecifiedbytheuser–Report.CreatesaWorddocumentthatincludestheprojectgeneralsettingsandinputdataspecifiedbytheuser(basedontheID_INPUT_DATAtemplate).138.Tutorial5CylinderDragCoefficient(optional)139