geom_tut_07_Grid_Generation_Orifice

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1、Tutorial7GridGenerationforCompliantOrificeFSIProblemThisisa2Dhybridstructured/unstructuredgridsystem.Inthistutorialwewilllearntodothefollowing:•Createbasicgeometry(points/lines/arcs)•Createanduseparameterstocontrolgeometry.•Modifybasicgeometryforgriddingpurposes.•Create2Dstructuredgridentiti

2、es(edges/faces/blocks)•Create2Dunstructuredgridentities(loops/2Dunstructureddomains).•Generate2Dunstructuredgrid.•Modifythegridsystemtoimprovegridquality.•Setupboundaryconditions.•Setupvolumeconditions.•SavegridsystemtoaDTFfile.ProblemDescriptionWearegoingtogenerateagridsystemtostudytheflowo

3、fengineoilthroughacompliantorifice.Effectsofthermalstressandfluid-structuralcouplingwillbeincluded.Thegoalistodeterminethepressuredeltaacrosstheorifice,maximumflowvelocity,andorificetipdeflection.Thegeometryis2D-axisymmetricandisgivenalongwithflowandstructuralboundaryconditionsinFigure1.T99-

4、G-01CFD-GEOMTutorials7-13/19/02Tutorial7:GridGenerationforCompliantOrificeFSIProblemGEOMETRYDIMENSIONSR=0.005mPTFERubber0.01m+0.005m0.005mradius0.01m0.015mdelta=(.0025-rad)0.03mFLOWBOUNDARYCONDITIONSPTFERubberInletOutletAxisofSymmetrySTRESSBOUNDARYCONDITIONSPTFERubber:Stressfree@300KAppliedF

5、luidForceAppliedFluidForceAxisofSymmetry7-2CFD-GEOMTutorialsT99-G-01Tutorial7:GridGenerationforCompliantOrificeFSIProblemProcedure1.CreatePointsandLinestoDefineGeometricMin/Max.SelectPoint/Thefourpointswillappearintheviewingwin-Pointfromthedow.Geometrymenu.EnterthefollowingpointsinthePointCo

6、ordi-natesfield:•A=(000)•B=(0.0300)•C=(00.010)•D=(0.030.010)Note:ChooseView/ResetView/Reset(Ctrl-G)tofittheviewtothescreen.CreatearectangleFourlinesarecreated.byconnectingtheCDpointsusingLine/Polyline.AB2.CreatetheArc.CreateaCenter-Thestatuslinepromptsyouforthecenterpointpoint-RadiusArcbyloc

7、ation.selectingCircleCre-ation-->Ctp-Rad-Arc.T99-G-01CFD-GEOMTutorials7-3Tutorial7:GridGenerationforCompliantOrificeFSIProblemEnterthecenterpointcoordinates:(0.010.005Thecenterpointiscreatedandthestatusline0)inthePointCoordinatesfield.promptsyoutos