ANSYS ICEM CFD 14 – Tutorial Manual

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ANSYS ICEM CFD 14 – Tutorial Manual

ANSYSICEMCFDTutorialManual

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TableofContents

HexaMeshGenerationfora2DPipeJunction . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . 1Preparation ... . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . 2

BlockingStrategy ............ ............ ............. ............ ............ ............ ............ ............ ............ ............. ......... 2

Step1:BlocktheGeometry ............ ............ ............. ............ ............ ............ ............ ............ ............. ....... 2

Step2:AssociateEntitiestotheGeometry .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... . 10

Step3:MovetheVertices ............ ............ ............ ............ ............. ............ ............ ............ ............ ......... 13

CFDiran Site 1 of 2: ANSYS_ICEM_CFD... top 1% 30,877 Info DownloadPDF

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.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..

Step5:GeneratetheInitialMesh ............ ............ ............. ............ ............ ............ ............ ............ .......... 18Step6:AdjusttheEdgeDistributionandRefinetheMesh .... .... .... .... .... .... .... ..... .... .... .... .... .... .... .... .... .... . 19

Step7:MatchtheEdges ............. ............ ............ ............ ............ ............ ............. ............ ............ .......... 24

Step8:VerifyandSavetheMeshandBlocking .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ... 28

HexaMeshGenerationfora3DPipeJunction . . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . 29

Preparation ... . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . 30Step1:CreatingParts ........... ............ ............ ............. ............ ............ ............ ............ ............ ............ .... 30

Step2:CreatingaMaterialPoint.. ............ ............ ............ ............ ............ ............. ............ ............ ......... 32

Step3:BlockingtheGeometry ............ ............ ............ ............ ............ ............ ............. ............ ............ . 33

Step4:ProjectingtheEdgestotheCurves .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... . 36

Step5:MovingtheVertices ........... ............ ............ ............ ............. ............ ............ ............ ............ ....... 38Step6:GeneratingtheMesh ........... ............ ............ ............ ............ ............ ............. ............ ............ ..... 40

Step7:CheckingtheMeshQuality ........... ............ ............ ............ ............. ............ ............ ............ ........ 44

Step8:CreatinganO-GridintheBlocking. .... .... .... .... .... .... .... .... .... ..... .... .... .... .... .... .... .... .... .... .... .... .... ... 45

Step9:VerifyingandSavingtheMesh. ............. ............ ............ ............ ............ ............ ............. ............ 51HexaMeshGenerationforaSphereCubeGeometry . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . 53

Preparation ... . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . 54

Step1:CreatingParts ........... ............ ............ ............. ............ ............ ............ ............ ............ ............ .... 54


Step3:BlockingtheGeometry ............ ............ ............ ............ ............ ............ ............. ............ ............ . 58

Step4:CreatingCompositeCurves ............ ............ ............ ............ ............ ............ ............ ............. ....... 58Step5:ProjectingEdgestotheCurves .... .... .... .... .... .... .... .... ..... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .. 60

Step6:MovingtheVertices ........... ............ ............ ............ ............. ............ ............ ............ ............ ....... 61

Step7:CreatingtheO-Grid ........... ............ ............ ............ ............ ............ ............. ............ ............ ....... 62

Step8:GeneratingtheMesh ........... ............ ............ ............ ............ ............ ............. ............ ............ ..... 65Step9:ViewingtheScanPlanes... ............ ............ ............ ............. ............ ............ ............ ............ ........ 67

Step10:VerifyingandSavingtheMesh ........... ............ ............. ............ ............ ............ ............ ............ . 69

HexaMeshGenerationforanElbowPart . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . 71

Preparation ... . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . 72


Step2:BlockingtheGeometry ............ ............ ............ ............ ............ ............ ............. ............ ............ . 75Step3:FittingtheBlockingtotheGeometry .... .... .... .... ..... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... . 78

Step4:CreatingtheFirstO-Grid ........... ............. ............ ............ ............ ............ ............ ............ ............ 82

Step5:AdjusttheO-GridEdgeLengthtoImproveQuality .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... . 85

Step6:GeneratethePre-Mesh ........... ............ ............. ............ ............ ............ ............ ............ ............. . 90

Step7:CreatingtheSecondO-Grid ............ ............ ............ ............ ............ ............. ............ ............ ...... 92

Step8:GeneratingtheMesh ........... ............ ............ ............ ............ ............ ............. ............ ............ ..... 95Step9:SavingtheProject ........... ............ ............. ............ ............ ............ ............ ............ ............ ........ 102

Tetra/PrismMeshGenerationforaHelicopter . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . 107

Preparation ... . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . 108

Step1:PreparingtheGeometry ............ ............ ............ ............. ............ ............ ............ ............ .......... 108

Step2:CreatingaMaterialPoint ........... ............ ............ ............ ............ ............ ............. ............ .......... 110

Step3:GeneratingtheOctreeMesh ............ ............ ............ ............ ............ ............ ............. ............ ... 111

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Step4:GeneratingtheDelaunayMesh ............. ............ ............ ............ ............ ............ ............. .......... 119

Step5:SmoothingtheMesh ............. ............ ............ ............ ............ ............ ............ ............. ............ . 121Step6:SavingtheProject ............ ............. ............ ............ ............ ............ ............ ............. ............ ...... 123

Tetra/PrismMeshGenerationforanAorta. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . 125

Preparation ... . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . .. . . . . . 126

Step1:CreatingParts ............. ............ ............ ............ ............ ............ ............ ............. ............ ............ 126

Step2:CreatingtheMaterialPoint... ............ ............ ............ ............ ............ ............. ............ ............ ... 129Step3:GeneratingtheOctreeMesh ........... ............ ............ ............ ............ ............. ............ ............ .... 131

Step4:GeneratingtheDelaunayMesh ............. ............ ............ ............ ............ ............ ............. .......... 139

Step5:SavingtheProject ............ ............. ............ ............ ............ ............ ............ ............. ............ ...... 143

FurtherSetup ............ ............ ............ ............ ............ ............ ............. ............ ............ ............ ............ 145

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ANSYSICEMCFD14.0-©SASIP,Inc.Allrightsreserved.-Containsproprietaryandconfidentialin-formationofANSYS,Inc.anditssubsidiariesandaffiliates.iv

HexaMeshGenerationfora2DPipeJunction

Inthistutorial,youwillgenerateameshforatwo-dimensionalpipejunctioncomprisingtwoinletsand

oneoutlet.Aftergeneratingan initialmesh,youwillcheckthequalityofthemesh,andrefineitfora

Navier-Stokes solution.

Figure:2DPipeGeometry


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Thistutorialdemonstrateshowtodothefollowing:

• Blockthegeometry.

• Associateentitiestothegeometry.

• Moveverticesontothegeometry.

• Applymeshparameters.

• Generatetheinitialmesh.

• Adjusttheedgedistributionandrefinethemesh.

• Matchtheedges.

• Verifyandsavethemesh.

Preparation

BlockingStrategy

Step1:BlocktheGeometry

Step2:AssociateEntitiestotheGeometryStep3:MovetheVertices

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ANSYS ICEM CFD 14 – Tutorial Manual