icem cfd 中文教程

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1、ICEMCFDApplication–ComputerSimulationofFlowaroundacircularcylinderExampleonusingcommercialsoftware“ICEMCFD5.1”FlowaroundacircularcylinderY.F.LinICEMCFDApplication–ComputerSimulationofFlowaroundacircularcylinderTwoDimensionalproblemsFlowaroundacircularcylinderProblemDescriptionAirflowsa

2、crossacylinderwiththeuniformvelocity0.003m/sinthewindtunnel.Thelengthofthewindtunnel(fluiddomain)has25mlongand10mheight.Thediameterofcylinderis1m.Wall(SideA)InletOutlet5DCylinderWall(SideB)Fluiddomain5D20DAssumptionandBoundaryConditions:1.2dimensionalproblems2.Steadystatecondition3.The

3、uniformflowvelocity4.NoHeattransfer5.Neglectthegravitationalforce6.ConstantairdensityPre-processingstageInthisstage,weimplementthe“ICEMCFD”toperformthepre-processingwork.Thebasicstepsasfollow:1.Establishgeometrymodel2.Blocktheparts3.GenerationtheOgrid4.Meshthemodelandcheckqualityofmesh

4、5.Extrudethemesh6.ResettheBC’s(boundaryconditions)7.OutputtoCFX5.7.1CreatingGeometry1.OpenICEMCFDDoubleClickthe“ICEMCFD”Icon,afterwards,youcanseetheinterfaceoftheICEMCFD.ICEMCFDApplication–ComputerSimulationofFlowaroundacircularcylinderOpenFile>NewProject…:Setthenamewith“cylinder_2d”,a

5、ndClick“Save”ICEMCFDApplication–ComputerSimulationofFlowaroundacircularcylinder2.CreatingGeometry:A.PointsClickbutton“CreatePoint”andthenclickbutton“ExplicitCoordinates”SetthepointsinCartesiancoordinatesystem(X,Y,Z)with(X=0,Y=0,Z=0)respectively.Click“Apply”buttonandseethescreen:apointi

6、screatedAtreewidgetcanbeseenatleftofthescreen(A)and(B)ICEMCFDApplication–ComputerSimulationofFlowaroundacircularcylinderThesamemethodcreatesotherpoints:X=0;Y=0.5,-0.5X=-5;Y=5,-5X=20;Y=5,-5Y=0;X=0.5,-0.5A.Drawline(curve)Firstofallseethetreewidget,openModel>Geometry>PointsbyrightbuttonSe

7、lectShowPointNamesandyoucanseethenameofeachpointlikethefigureshowed.ICEMCFDApplication–ComputerSimulationofFlowaroundacircularcylinderNowyoucancreatecurvesClickbutton“Create/ModifyCurve”Clickbutton“CreateCurve”Note:theleftcorneroftheblackscreen:Selectlocationswithleftbutton,middle=do