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5/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.ANSYSICEMCFDV11Inventory#0023821-1包裹表面-Workshop4发动机装配体5/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-2ANSYSICEMCFDV11培训教程ANSYSv11.0打开几何读入几何:–浏览到shrinkwrap目录–File-ImportGeometry-VRML–选择:engine_asm.wrl打开#3#1#25/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-3ANSYSICEMCFDV11培训教程ANSYSv11.0创建一个Project选择FileSaveProject浏览到shrinkwrap工作目录输入project名字输入名字:engine1.prj提示:下拉菜单可以迅速定位最近使用的文件在Windows环境,文件浏览器提供了和Windows资源管理器一样得功能.在Unix或者Linux,相似的功能同样可以实现Project文件包含了工程的设置信息,工作目录和相关联的文件一旦project文件保存了,几何,网格,和其他设置信息都会同时保存5/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-4ANSYSICEMCFDV11培训教程ANSYSv11.0显示表面显示表面,并采用适应屏幕显示因为这是个大模型,可能要打开比较慢#1#25/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-5ANSYSICEMCFDV11培训教程ANSYSv11.0设置面上的网格参数设置面上的网格参数Mesh-GlobalMeshSetup-ShellMeshingParameters设置网格类型QuadDominant设置网格方法ShrinkwrapSection=ShrinkwrapNumberofsmoothiterations=2Surfaceprojectionfactor=0.01Apply#1#2#6#3#4#55/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-6ANSYSICEMCFDV11培训教程ANSYSv11.0设置表面的网格大小#1#2#3#4设置网格大小Mesh-SurfaceMeshSetup选中所有的表面Maximumsize=0.025Apply5/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-7ANSYSICEMCFDV11培训教程ANSYSv11.0设置表面的网格大小#1#2#3#4#5#6设置表面网格大小Mesh-SurfaceMeshSetup选择surfacesbyparts选择P_OIL_PAN_287/0andP_CAM_COVER_295Maximumsize=0.005Apply.保存Project5/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-8ANSYSICEMCFDV11培训教程ANSYSv11.0创建表面网格#1#2Mesh-ComputeMesh-SurfaceMeshOnly点击Compute可能要等一会儿,但是一旦这个过程结束,我们就可以关闭几何,这样以后会更快5/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-9ANSYSICEMCFDV11培训教程ANSYSv11.0把四边形转换为三角形封闭表面后操作会更容易File-Geometry-Closegeometry保存几何文件把所有四边形转换为三角形EditMesh-ConvertMeshType-QuadtoTriMethod=Shells选择所有的element#1#2#3#45/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-10ANSYSICEMCFDV11培训教程ANSYSv11.0把网格转换为几何使用Mesh-Facets把网格转换为几何这将使得我们光顺和移动节点的时候,遵照简化了的表面,而不是原来的那个特别占内存的表面5/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-11ANSYSICEMCFDV11培训教程ANSYSv11.0光顺网格光顺网格EditMesh-SmoothMeshgloballySmoothingiterations=10Uptovalue=0.3Criterion=Quality光顺后的网格质量#1#2#35/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-12ANSYSICEMCFDV11培训教程ANSYSv11.0查看网格–质量柱状图–左键点击前两列柱,在这个范围内的单元即被选中–右键点击柱,选择Show来显示网格–也可以选择Solid方式显示单元–选择Subset创建网格的子集.–隐藏Shells使得单元更容易被寻找–右键点击subset名字选择selectAdd1Layer5/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-13ANSYSICEMCFDV11培训教程ANSYSv11.0编辑网格打开表面查看区域这些单元可以通过合并节点的方式来移除EditMesh-MergeNodes-MergeInteractive打开ignoreprojection选择2个节点点击Apply检查网格的质量#1#2#3#45/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-14ANSYSICEMCFDV11培训教程ANSYSv11.0创建远场创建远场边界Geometry-Create/Modifysurfaces-StandardShapesPart=WALLS选择发动机所有表面输入X,Y,Zscalefactors点击Apply#1#2#3#4#5#65/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-15ANSYSICEMCFDV11培训教程ANSYSv11.0创建PartsInletOutlet在模型树里面点击右键点击“Parts-CreatePart”创建INLET和OUTLET输入Part名字,选择表面加入当前part#1#2#35/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-16ANSYSICEMCFDV11培训教程ANSYSv11.0创建拓扑打开INLET,OUTLET和WALLparts.关掉其他的parts创建拓扑取得点和线特征Geometry-RepairGeometry-BuildDiagnosticTopology设置Tolerance=0.005Method=Onlyvisibleparts点击Apply#1#2#3#5#45/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-17ANSYSICEMCFDV11培训教程ANSYSv11.0设置全局网格参数#1#2#3#4#5#6#7对于设置远场的尺寸最方便的方法就是设置整个模型的最大尺寸Mesh-GlobalMeshSetup-GlobalMeshSizeMaxelement=0.05点击ApplyMesh-GlobalMeshSetup-ShellMeshingParameter设置Meshtype为AllTri点击Apply5/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-18ANSYSICEMCFDV11培训教程ANSYSv11.0创建表面网格#1#2#3#4#5#6#7#8在进出口和壁面上创建表面网格Mesh-ComputeMesh-SurfaceMeshonly选择geometryFromScreen当选择表面时,选择“selectitemsinapart”图标INLET,OUTLET&WALLS点击Compute5/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-19ANSYSICEMCFDV11培训教程ANSYSv11.0检查网格–CheckingtheMesh–选择EditMesh-CheckMesh–使用默认设置,点击Apply–对于Duplicateelements选择Fix–在节点合并的过程中,线单元是重复的单元–对于Missinginternalfaces选择Ignore–在不同parts的shell单元之间缺少了线单元–对于MultipleEdges选择Ignore#1#2#35/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-20ANSYSICEMCFDV11培训教程ANSYSv11.0设置四面体网格参数#1#2#3#4#5设置四面体网格参数Mesh-GlobalMeshParameters-VolumeMeshingParametersMeshMethod=DelaunayExpansionFactor=1.2假如需要更多内存,增加Memoryscalingfactor的值5/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-21ANSYSICEMCFDV11培训教程ANSYSv11.0生成四面体网格#1#2#3#4#5生成Delaunay四面体网格Mesh-ComputeMesh-VolumeMeshMeshMethod=Quick(Delaunay)Select=ExistingMesh打开LoadMeshaftercompletion输入VolumePartNameFLUID点击Compute5/20/2009Revised©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-22ANSYSICEMCFDV11培训教程ANSYSv11.0查看切面View-MeshCutPlane在定义网格切面时,选择Method为MiddleZplane在模型树里面打开Volumes#1#2
本文标题:B4-WS4_发动机装配体_Shrinkwrap
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