ANSYS Fluent User's Guide
Release 19.2ANSYS, Inc.
August 2018Southpointe
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Table of Contents
I. Meshing Mode ......................................................................................................................................... 1
1. Introduction to Meshing Mode in Fluent .......................................................................................... 3
1.1. Meshing Approach ..................................................................................................................... 3
1.2. Meshing Mode Capabilities ......................................................................................................... 3
2. Starting Fluent in Meshing Mode ..................................................................................................... 5
2.1. Starting the Dual Process Build .................................................................................................... 5
3. Graphical User Interface ................................................................................................................... 7
3.1. User Interface Components ......................................................................................................... 8
3.1.1. The Ribbon ........................................................................................................................ 8
3.1.2.The Workflow Tab ............................................................................................................. 13
3.1.3.The Tree Tab ..................................................................................................................... 14
3.1.4.The Graphics Window ....................................................................................................... 21
3.1.5. Quick Search .................................................................................................................... 22
3.1.6. The Console ..................................................................................................................... 22
3.1.7.The Toolbars ..................................................................................................................... 23
3.1.7.1. Pointer Tools ............................................................................................................ 23
3.1.7.2. View Tools ............................................................................................................... 24
3.1.7.3. Projection ................................................................................................................ 25
3.1.7.4. Display Options ....................................................................................................... 25
3.1.7.5. Filter Toolbar ........................................................................................................... 25
3.1.7.6. CAD Tools ................................................................................................................ 25
3.1.7.7. Tools ....................................................................................................................... 26
3.1.7.8. Context Toolbar ....................................................................................................... 26
3.1.8. ACT Start Page ................................................................................................................. 26
3.2. Customizing the User Interface ................................................................................................. 27
3.3. Setting User Preferences/Options .............................................................................................. 27
3.4. Using the Help System .............................................................................................................. 28
3.4.1. Help for Text Interface Commands .................................................................................... 29
3.4.2. Obtaining a Listing of Other License Users ........................................................................ 29
4. Text Menu System ........................................................................................................................... 31
5. Reading and Writing Files ............................................................................................................... 33
5.1. Shortcuts for Reading and Writing Files ..................................................................................... 33
5.1.1. Binary Files ....................................................................................................................... 33
5.1.2. Reading and Writing Compressed Files ............................................................................. 33
5.1.2.1. Reading Compressed Files ....................................................................................... 34
5.1.2.2.Writing Compressed Files ......................................................................................... 34
5.1.3.Tilde Expansion (LINUX Systems Only) .............................................................................. 35
5.1.4. Disabling the Overwrite Confirmation Prompt .................................................................. 35
5.2. Mesh Files ................................................................................................................................. 35
5.2.1. Reading Mesh Files ........................................................................................................... 35
5.2.1.1. Reading Multiple Mesh Files ..................................................................................... 36
5.2.1.2. Reading 2D Mesh Files in the 3D Version of Fluent .................................................... 36
5.2.2. Reading Boundary Mesh Files ........................................................................................... 36
5.2.3. Reading Faceted Geometry Files from ANSYS Workbench in Fluent ................................... 37
5.2.4. Appending Mesh Files ...................................................................................................... 37
5.2.5.Writing Mesh Files ............................................................................................................ 37
5.2.6. Writing Boundary Mesh Files ............................................................................................ 38
5.3. Case Files .................................................................................................................................. 38
5.3.1. Reading Case Files ............................................................................................................ 38
5.3.2. Writing Case Files ............................................................................................................. 39
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5.3.2.1.Writing Files Using Hierarchical Data Format (HDF) ................................................... 39
5.4. Reading and Writing Size-Field Files ........................................................................................... 40
5.5. Reading Scheme Source Files .................................................................................................... 40
5.6. Creating and Reading Journal Files ............................................................................................ 40
5.7. Creating Transcript Files ............................................................................................................ 42
5.8. Reading and Writing Domain Files ............................................................................................. 43
5.9. Importing Files ......................................................................................................................... 43
5.9.1. Importing CAD Files ......................................................................................................... 44
5.10. Saving Picture Files ................................................................................................................. 50
5.10.1. Using the Save Picture Dialog Box ................................................................................... 51
6.Working With Fluent Guided Workflows ......................................................................................... 55
6.1. Getting Started with Watertight Geometry Guided Workflow ..................................................... 55
6.1.1. Prerequisites for the Watertight Geometry Guided Workflows ........................................... 55
6.1.2. Limitations of the Watertight Geometry Guided Workflows ............................................... 56
6.2. Customizing Workflows ............................................................................................................. 57
6.2.1. Working With Tasks .......................................................................................................... 57
6.2.2. Understanding Task States ................................................................................................ 58
6.2.3. Operating on Tasks ........................................................................................................... 58
6.2.4. Grouping Tasks ................................................................................................................. 59
6.2.5. Editing Tasks .................................................................................................................... 59
6.2.6. Saving and Loading Workflows ......................................................................................... 59
6.2.7. Setting Preferences for Workflows ..................................................................................... 59
6.2.8. Getting Help for Workflow Tasks ....................................................................................... 60
6.3. Understanding the Tasks in Guided Workflows ........................................................................... 60
6.3.1. Importing CAD Geometries .............................................................................................. 60
6.3.2. Adding Local Sizing .......................................................................................................... 62
6.3.3. Creating Surface Meshes .................................................................................................. 63
6.3.4. Describing the Geometry ................................................................................................. 65
6.3.5. Enclosing Fluid Regions .................................................................................................... 66
6.3.6. Creating Regions .............................................................................................................. 69
6.3.7. Updating Regions ............................................................................................................ 70
6.3.8. Creating a Volume Mesh ................................................................................................... 71
6.3.9. Updating Boundaries ....................................................................................................... 74
6.3.10. Improving the Surface Mesh ........................................................................................... 74
6.3.11. Adding Boundary Types ................................................................................................. 75
6.3.12. Improving the Volume Mesh .......................................................................................... 76
6.3.13. Modifying Mesh Refinement ........................................................................................... 76
6.3.14. Running Custom Journal Commands .............................................................................. 77
7. CAD Assemblies .............................................................................................................................. 79
7.1. CAD Assemblies Tree ................................................................................................................. 79
7.1.1. FMDB File ......................................................................................................................... 80
7.1.2. CAD Entity Path ................................................................................................................ 80
7.1.3. CAD Assemblies Tree Options ........................................................................................... 81
7.2. Visualizing CAD Entities ............................................................................................................ 81
7.3. Updating CAD Entities .............................................................................................................. 82
7.4. Manipulating CAD Entities ........................................................................................................ 83
7.4.1. Creating and Modifying Geometry/Mesh Objects ............................................................. 83
7.4.2. Managing Labels .............................................................................................................. 83
7.4.3. Setting CAD Entity States ................................................................................................. 84
7.4.4. Modifying CAD Entities .................................................................................................... 84
7.5. CAD Association ....................................................................................................................... 85
8. Size Functions and Scoped Sizing ................................................................................................... 87
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User's Guide
8.1.Types of Size Functions or Scoped Sizing Controls ...................................................................... 88
8.1.1. Curvature ......................................................................................................................... 88
8.1.2. Proximity ......................................................................................................................... 89
8.1.3. Meshed ............................................................................................................................ 93
8.1.4. Hard ................................................................................................................................ 93
8.1.5. Soft .................................................................................................................................. 94
8.1.6. Body of Influence ............................................................................................................. 94
8.2. Defining Size Functions ............................................................................................................. 95
8.2.1. Creating Default Size Functions ........................................................................................ 96
8.3. Defining Scoped Sizing Controls ............................................................................................... 96
8.3.1. Size Control Files .............................................................................................................. 97
8.4. Computing the Size Field .......................................................................................................... 97
8.4.1. Size Field Files .................................................................................................................. 98
8.4.2. Using Size Field Filters ...................................................................................................... 98
8.4.3. Visualizing Sizes ............................................................................................................... 99
8.5. Using the Size Field ................................................................................................................. 100
9. Objects and Material Points .......................................................................................................... 103
9.1. Objects ................................................................................................................................... 103
9.1.1. Object Attributes ............................................................................................................ 104
9.1.1.1. Creating Objects .................................................................................................... 106
9.1.2. Object Entities ................................................................................................................ 107
9.1.2.1. Using Face Zone Labels .......................................................................................... 107
9.1.3. Managing Objects ......................................................................................................... 108
9.1.3.1. Using hotkeys and onscreen tools .......................................................................... 108
9.1.3.1.1. Creating Objects for CAD Entities .................................................................. 109
9.1.3.1.2. Creating Objects for Unreferenced Zones ...................................................... 109
9.1.3.1.3. Creating Multiple Objects .............................................................................. 109
9.1.3.1.4. Easy Object Creation and Modification .......................................................... 110
9.1.3.1.5. Changing Object Properties .......................................................................... 110
9.1.3.1.6. Automatic Alignment of Objects ................................................................... 111
9.1.3.1.7. Remeshing Geometry Objects ....................................................................... 111
9.1.3.1.8. Creating Edge Zones ..................................................................................... 111
9.1.3.2. Using the Manage Objects Dialog Box .................................................................... 112
9.1.3.2.1. Defining Objects ........................................................................................... 112
9.1.3.2.2. Object Manipulation Operations ................................................................... 113
9.1.3.2.3. Object Transformation Operations ................................................................. 114
9.2. Material Points ........................................................................................................................ 114
9.2.1. Creating Material Points ................................................................................................. 117
10. Object-Based Surface Meshing ................................................................................................... 119
10.1. Surface Mesh Processes ......................................................................................................... 119
10.2. Preparing the Geometry ........................................................................................................ 121
10.2.1. Using a Bounding Box .................................................................................................. 121
10.2.2. Closing Annular Gaps in the Geometry .......................................................................... 122
10.2.3. Patching Tools .............................................................................................................. 122
10.2.3.1. Using the Patch Options Dialog Box ..................................................................... 123
10.2.3.2. Using the Loop Selection Tool .............................................................................. 126
10.2.4. Using User-Defined Groups .......................................................................................... 127
10.3. Diagnostic Tools .................................................................................................................... 127
10.3.1. Geometry Issues ........................................................................................................... 128
10.3.2. Face Connectivity Issues ............................................................................................... 128
10.3.3. Quality Checking .......................................................................................................... 130
10.3.4. Summary ..................................................................................................................... 131
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Release 19.2 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential information
of ANSYS, Inc. and its subsidiaries and affiliates.
User's Guide
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