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最新版ANSYS_Fluent_19_Workbench_Tutorial_Guide。 The ANSYS Fluent Workbench Tutorial Guide contains a number of tutorials that teach you how to use ANSYS Fluent to solve different types of problems.
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ANSYS Fluent Workbench Tutorial Guide
Release 19.0ANSYS, Inc.
January 2018Southpointe
2600 ANSYS Drive
Canonsburg, PA 15317
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ANSYS Europe,
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Table of Contents
Using This Manual ........................................................................................................................................ ix
1.What’s In This Manual .......................................................................................................................... ix
2.Typographical Conventions Used In This Manual .................................................................................. ix
1. Introduction to Using ANSYS Fluent in ANSYS Workbench: Fluid Flow and Heat Transfer in a Mixing
Elbow .......................................................................................................................................................... 1
1.1. Introduction ..................................................................................................................................... 1
1.2. Prerequisites ..................................................................................................................................... 2
1.3. Problem Description ......................................................................................................................... 2
1.4. Setup and Solution ........................................................................................................................... 3
1.4.1. Preparation .............................................................................................................................. 4
1.4.2. Creating a Fluent Fluid Flow Analysis System in ANSYS Workbench ........................................... 4
1.4.3. Creating the Geometry in ANSYS DesignModeler ...................................................................... 8
1.4.4. Meshing the Geometry in the ANSYS Meshing Application ...................................................... 18
1.4.5. Setting Up the CFD Simulation in ANSYS Fluent ...................................................................... 25
1.4.5.1. Starting ANSYS Fluent ................................................................................................... 25
1.4.5.2. Setting Up Domain ........................................................................................................ 27
1.4.5.3. Setting Up Physics ......................................................................................................... 30
1.4.6. Solving .................................................................................................................................. 40
1.4.7. Displaying Results in ANSYS Fluent and CFD-Post .................................................................... 49
1.4.8. Duplicating the Fluent-Based Fluid Flow Analysis System ........................................................ 58
1.4.9. Changing the Geometry in ANSYS DesignModeler .................................................................. 59
1.4.10. Updating the Mesh in the ANSYS Meshing Application .......................................................... 61
1.4.11. Calculating a New Solution in ANSYS Fluent .......................................................................... 63
1.4.12. Comparing the Results of Both Systems in CFD-Post .............................................................. 65
1.5. Summary ........................................................................................................................................ 70
2. Parametric Analysis in ANSYS Workbench Using ANSYS Fluent ........................................................... 71
2.1. Introduction ................................................................................................................................... 71
2.2. Prerequisites ................................................................................................................................... 72
2.3. Problem Description ....................................................................................................................... 72
2.4. Setup and Solution ......................................................................................................................... 75
2.4.1. Preparation ............................................................................................................................ 76
2.4.2. Adding Constraints to ANSYS DesignModeler Parameters in ANSYS Workbench ...................... 76
2.4.3. Setting Up the CFD Simulation in ANSYS Fluent ...................................................................... 82
2.4.3.1. Starting ANSYS Fluent ................................................................................................... 82
2.4.3.2. Setting Up Physics ......................................................................................................... 83
2.4.4. Defining Input Parameters in ANSYS Fluent ............................................................................. 87
2.4.5. Solving .................................................................................................................................. 92
2.4.6. Postprocessing and Setting the Output Parameters in ANSYS CFD-Post ................................... 95
2.4.7. Creating Additional Design Points in ANSYS Workbench ........................................................ 104
2.4.8. Postprocessing the New Design Points in CFD-Post ............................................................... 107
2.4.9. Summary ............................................................................................................................. 111
3. Solving a Cold Flow Simulation ........................................................................................................... 113
3.1. Preparation ................................................................................................................................... 114
3.2. Step 1: Setting the Properties ........................................................................................................ 114
3.3. Step 2: Performing the Decomposition .......................................................................................... 116
3.4. Step 3: Meshing ............................................................................................................................ 124
3.5. Step 4: Setting up the Simulation ................................................................................................... 127
3.6. Step 5: Running the Solution ......................................................................................................... 141
3.7. Step 6: Obtaining the Results ......................................................................................................... 144
3.8. Step 7: Postprocessing ................................................................................................................... 168
iii
Release 19.0 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential information
of ANSYS, Inc. and its subsidiaries and affiliates.
3.9. Summary ...................................................................................................................................... 173
3.10. Further Improvements ................................................................................................................ 173
4. Solving a Port Flow Simulation ........................................................................................................... 175
4.1. Preparation ................................................................................................................................... 176
4.2. Step 1: Setting the Properties ........................................................................................................ 176
4.3. Step 2: Performing the Decomposition .......................................................................................... 177
4.4. Step 3: Meshing ............................................................................................................................ 188
4.5. Step 4: Setting up the Simulation ................................................................................................... 190
4.6. Step 5: Running the Solution ......................................................................................................... 197
4.7. Step 6: Obtaining the Results ......................................................................................................... 206
4.8. Summary ...................................................................................................................................... 221
4.9. Further Improvements .................................................................................................................. 221
5. Solving a Combustion Simulation for a Sector ................................................................................... 223
5.1. Preparation ................................................................................................................................... 224
5.2. Step 1: Setting the Properties ........................................................................................................ 224
5.3. Step 2: Performing the Decomposition .......................................................................................... 226
5.4. Step 3: Meshing ............................................................................................................................ 232
5.5. Step 4: Setting up the Simulation ................................................................................................... 234
5.6. Step 5: Running the Solution ......................................................................................................... 248
5.7. Step 6: Obtaining the Results ......................................................................................................... 252
5.8. Summary ...................................................................................................................................... 285
5.9. Further Improvements .................................................................................................................. 286
6. Solving a Gasoline Direct Injection Engine Simulation ...................................................................... 287
6.1. Preparation ................................................................................................................................... 288
6.2. Step 1: Setting the Properties ........................................................................................................ 288
6.3. Step 2: Performing the Decomposition .......................................................................................... 289
6.4. Step 3: Meshing ............................................................................................................................ 302
6.5. Step 4: Setting up the Simulation ................................................................................................... 303
6.6. Step 5: Running the Solution ......................................................................................................... 321
6.7. Step 6: Obtaining the Results ......................................................................................................... 325
6.8. Summary ...................................................................................................................................... 369
6.9. Further Improvements .................................................................................................................. 369
Release 19.0 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential information
of ANSYS, Inc. and its subsidiaries and affiliates.iv
Workbench Tutorial Guide
List of Figures
1.1. Problem Specification ............................................................................................................................. 3
1.2. Selecting the Fluid Flow (Fluent) Analysis System in ANSYS Workbench ................................................... 5
1.3. ANSYS Workbench with a New Fluent-Based Fluid Flow Analysis System .................................................. 5
1.4. ANSYS Workbench Files View for the Project After Adding a Fluent-Based Fluid Flow Analysis System ....... 7
1.5. Elbow Main Pipe Geometry ................................................................................................................... 14
1.6. ANSYS Workbench Files View for the Project After Creating the Geometry .............................................. 17
1.7. The ANSYS Meshing Application with the Elbow Geometry Loaded ....................................................... 19
1.8. Selecting a Face to Name ...................................................................................................................... 20
1.9. Applying a Name to a Selected Face ...................................................................................................... 21
1.10.The Computational Mesh for the Elbow Geometry in the ANSYS Meshing Application .......................... 24
1.11. ANSYS Workbench Files View for the Project After Mesh Creation ......................................................... 25
1.12. Fluent Launcher .................................................................................................................................. 26
1.13. The ANSYS Fluent Application ............................................................................................................. 27
1.14. The Create/Edit Materials Dialog Box ................................................................................................... 34
1.15. Convergence History of the Maximum Temperature at Pressure Outlet ................................................. 47
1.16. Residuals for the Converged Solution .................................................................................................. 48
1.17.Velocity Distribution Along Symmetry Plane ........................................................................................ 51
1.18. Temperature Distribution Along Symmetry Plane ................................................................................ 52
1.19.The Elbow Geometry Loaded into CFD-Post ......................................................................................... 54
1.20.Velocity Distribution Along Symmetry Plane ........................................................................................ 56
1.21. Temperature Distribution Along Symmetry Plane ................................................................................ 57
1.22. Duplicating the Fluid Flow System ....................................................................................................... 58
1.23. The Original Fluid Flow System and Its Duplicate ................................................................................. 59
1.24. Changing the Diameter of the Small Inlet in ANSYS DesignModeler ..................................................... 61
1.25. Updating the Mesh for the Changed Geometry ................................................................................... 62
1.26.The Updated Geometry and Mesh in the ANSYS Meshing Application .................................................. 63
1.27.The New Results System in the Project Schematic ............................................................................. 65
1.28. Connecting the First Fluid Flow System to the New Results System ...................................................... 65
1.29. Connecting the Second Fluid Flow System to the New Results System .................................................. 66
1.30. CFD-Post with Both Fluid Flow Systems Displayed ............................................................................... 66
1.31. CFD-Post Displaying Velocity Contours for Both Geometries ................................................................. 68
1.32. CFD-Post Displaying Temperature Contours for Both Geometries ......................................................... 69
2.1. Automotive HVAC System ..................................................................................................................... 73
2.2. HVAC System Valve Location Details ...................................................................................................... 74
2.3. Flow Pattern for the Cooling Cycle ......................................................................................................... 75
2.4.The Project Loaded into ANSYS Workbench ........................................................................................... 77
2.5. Parameters Defined in ANSYS DesignModeler ....................................................................................... 78
2.6. New Parameters Defined in ANSYS Workbench ...................................................................................... 78
2.7. Constrained Parameter hcpos ............................................................................................................. 79
2.8. Constrained Parameter ftpos ............................................................................................................. 80
2.9. Constrained Parameter wsfpos ........................................................................................................... 81
2.10. ANSYS Fluent Launcher ....................................................................................................................... 82
2.11. The ANSYS Fluent Application ............................................................................................................. 83
2.12. The Input Parameters Sub-Branch in ANSYS Fluent .............................................................................. 90
2.13.The Parameters View in ANSYS Workbench .......................................................................................... 90
2.14.The Automotive HVAC Geometry Loaded into CFD-Post ....................................................................... 95
2.15. Vectors Colored by Pressure ................................................................................................................ 98
2.16. Vectors Colored by Velocity ................................................................................................................. 99
2.17. Vectors Colored by Temperature ........................................................................................................ 100
2.18.The Updated Project Loaded into ANSYS Workbench Displaying the Files View ................................... 104
v
Release 19.0 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential information
of ANSYS, Inc. and its subsidiaries and affiliates.
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