ANSYS Fluent Tutorial Guide
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Table of Contents
Using This Manual ...................................................................................................................................... xxi
1. What’s In This Manual ........................................................................................................................ xxi
2. How To Use This Manual .................................................................................................................... xxi
2.1. For the Beginner ....................................................................................................................... xxi
2.2. For the Experienced User .......................................................................................................... xxi
3.Typographical Conventions Used In This Manual ................................................................................ xxi
1. Introduction to Using ANSYS Fluent: Fluid Flow and Heat Transfer in a Mixing Elbow .......................... 1
1.1. Introduction ..................................................................................................................................... 1
1.2. Prerequisites ..................................................................................................................................... 1
1.3. Problem Description ......................................................................................................................... 1
1.4. Setup and Solution ........................................................................................................................... 2
1.4.1. Preparation .............................................................................................................................. 3
1.4.2. Launching ANSYS Fluent .......................................................................................................... 3
1.4.3. Reading the Mesh .................................................................................................................... 6
1.4.4. Setting Up Domain .................................................................................................................. 9
1.4.5. Setting Up Physics .................................................................................................................. 12
1.4.6. Solving .................................................................................................................................. 24
1.4.7. Displaying the Preliminary Solution ........................................................................................ 34
1.4.8. Using the Coupled Solver ....................................................................................................... 48
1.4.9. Adapting the Mesh ................................................................................................................. 50
1.5. Summary ........................................................................................................................................ 63
2. Postprocessing ...................................................................................................................................... 65
2.1. Introduction ................................................................................................................................... 65
2.2. Prerequisites ................................................................................................................................... 66
2.3. Problem Description ....................................................................................................................... 66
2.4. Setup and Solution ......................................................................................................................... 66
2.4.1. Preparation ............................................................................................................................ 67
2.4.2. Reading the Mesh .................................................................................................................. 67
2.4.3. Manipulating the Mesh in the Viewer ...................................................................................... 67
2.4.4. Adding Lights ........................................................................................................................ 69
2.4.5. Creating Isosurfaces ............................................................................................................... 73
2.4.6. Generating Contours .............................................................................................................. 76
2.4.7. Generating Velocity Vectors .................................................................................................... 80
2.4.8. Creating an Animation ........................................................................................................... 86
2.4.9. Displaying Pathlines ............................................................................................................... 91
2.4.10. Creating a Scene With Vectors and Contours ......................................................................... 96
2.4.11. Advanced Overlay of Pathlines on a Scene ............................................................................ 98
2.4.12. Creating Exploded Views .................................................................................................... 100
2.4.13. Animating the Display of Results in Successive Streamwise Planes ....................................... 105
2.4.14. Generating XY Plots ............................................................................................................ 107
2.4.15. Creating Annotation ........................................................................................................... 111
2.4.16. Saving Picture Files ............................................................................................................. 113
2.4.17. Generating Volume Integral Reports ................................................................................... 113
2.5. Summary ...................................................................................................................................... 114
3. Modeling Periodic Flow and Heat Transfer ......................................................................................... 115
3.1. Introduction ................................................................................................................................. 115
3.2. Prerequisites ................................................................................................................................. 115
3.3. Problem Description ..................................................................................................................... 116
3.4. Setup and Solution ....................................................................................................................... 116
3.4.1. Preparation .......................................................................................................................... 117
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3.4.2. Mesh .................................................................................................................................... 117
3.4.3. General Settings ................................................................................................................... 120
3.4.4. Models ................................................................................................................................. 120
3.4.5. Materials .............................................................................................................................. 121
3.4.6. Cell Zone Conditions ............................................................................................................ 122
3.4.7. Periodic Conditions .............................................................................................................. 123
3.4.8. Boundary Conditions ............................................................................................................ 123
3.4.9. Solution ............................................................................................................................... 124
3.4.10. Postprocessing ................................................................................................................... 129
3.5. Summary ...................................................................................................................................... 137
3.6. Further Improvements .................................................................................................................. 137
4. Modeling External Compressible Flow ............................................................................................... 139
4.1. Introduction ................................................................................................................................. 139
4.2. Prerequisites ................................................................................................................................. 139
4.3. Problem Description ..................................................................................................................... 139
4.4. Setup and Solution ....................................................................................................................... 140
4.4.1. Preparation .......................................................................................................................... 140
4.4.2. Mesh .................................................................................................................................... 140
4.4.3. Solver .................................................................................................................................. 142
4.4.4. Models ................................................................................................................................. 143
4.4.5. Materials .............................................................................................................................. 144
4.4.6. Boundary Conditions ............................................................................................................ 145
4.4.7. Operating Conditions ........................................................................................................... 148
4.4.8. Solution ............................................................................................................................... 149
4.4.9. Postprocessing ..................................................................................................................... 165
4.5. Summary ...................................................................................................................................... 171
4.6. Further Improvements .................................................................................................................. 171
5. Modeling Transient Compressible Flow .............................................................................................. 173
5.1. Introduction ................................................................................................................................. 173
5.2. Prerequisites ................................................................................................................................. 173
5.3. Problem Description ..................................................................................................................... 173
5.4. Setup and Solution ....................................................................................................................... 174
5.4.1. Preparation .......................................................................................................................... 174
5.4.2. Reading and Checking the Mesh ........................................................................................... 174
5.4.3. Solver and Analysis Type ....................................................................................................... 177
5.4.4. Models ................................................................................................................................. 178
5.4.5. Materials .............................................................................................................................. 179
5.4.6. Operating Conditions ........................................................................................................... 180
5.4.7. Boundary Conditions ............................................................................................................ 180
5.4.8. Solution: Steady Flow ........................................................................................................... 183
5.4.9. Enabling Time Dependence and Setting Transient Conditions ............................................... 196
5.4.10. Specifying Solution Parameters for Transient Flow and Solving ............................................ 199
5.4.11. Saving and Postprocessing Time-Dependent Data Sets ....................................................... 202
5.5. Summary ...................................................................................................................................... 215
5.6. Further Improvements .................................................................................................................. 215
6. Modeling Flow Through Porous Media ............................................................................................... 217
6.1. Introduction ................................................................................................................................. 217
6.2. Prerequisites ................................................................................................................................. 217
6.3. Problem Description ..................................................................................................................... 218
6.4. Setup and Solution ....................................................................................................................... 218
6.4.1. Preparation .......................................................................................................................... 218
6.4.2. Mesh .................................................................................................................................... 219
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6.4.3. General Settings ................................................................................................................... 221
6.4.4. Models ................................................................................................................................. 221
6.4.5. Materials .............................................................................................................................. 222
6.4.6. Cell Zone Conditions ............................................................................................................ 224
6.4.7. Boundary Conditions ............................................................................................................ 227
6.4.8. Solution ............................................................................................................................... 230
6.4.9. Postprocessing ..................................................................................................................... 234
6.5. Summary ...................................................................................................................................... 248
6.6. Further Improvements .................................................................................................................. 248
7. Modeling Radiation and Natural Convection ..................................................................................... 249
7.1. Introduction ................................................................................................................................. 249
7.2. Prerequisites ................................................................................................................................. 249
7.3. Problem Description ..................................................................................................................... 249
7.4. Setup and Solution ....................................................................................................................... 250
7.4.1. Preparation .......................................................................................................................... 250
7.4.2. Reading and Checking the Mesh ........................................................................................... 251
7.4.3. Solver and Analysis Type ....................................................................................................... 251
7.4.4. Models ................................................................................................................................. 252
7.4.5. Defining the Materials .......................................................................................................... 256
7.4.6. Operating Conditions ........................................................................................................... 257
7.4.7. Boundary Conditions ............................................................................................................ 258
7.4.8. Obtaining the Solution ......................................................................................................... 262
7.4.9. Postprocessing ..................................................................................................................... 269
7.4.10. Comparing the Contour Plots after Varying Radiating Surfaces ............................................ 282
7.4.11. S2S Definition, Solution, and Postprocessing with Partial Enclosure ...................................... 287
7.5. Summary ...................................................................................................................................... 291
7.6. Further Improvements .................................................................................................................. 291
8. Using a Single Rotating Reference Frame ........................................................................................... 293
8.1. Introduction ................................................................................................................................. 293
8.2. Prerequisites ................................................................................................................................. 293
8.3. Problem Description ..................................................................................................................... 293
8.4. Setup and Solution ....................................................................................................................... 294
8.4.1. Preparation .......................................................................................................................... 295
8.4.2. Mesh .................................................................................................................................... 295
8.4.3. General Settings ................................................................................................................... 295
8.4.4. Models ................................................................................................................................. 297
8.4.5. Materials .............................................................................................................................. 299
8.4.6. Cell Zone Conditions ............................................................................................................ 299
8.4.7. Boundary Conditions ............................................................................................................ 300
8.4.8. Solution Using the Standard k- ε Model ................................................................................. 303
8.4.9. Postprocessing for the Standard k- ε Solution ........................................................................ 310
8.4.10. Solution Using the RNG k- ε Model ...................................................................................... 319
8.4.11. Postprocessing for the RNG k- ε Solution ............................................................................. 321
8.5. Summary ...................................................................................................................................... 326
8.6. Further Improvements .................................................................................................................. 326
8.7. References .................................................................................................................................... 327
9. Using Multiple Reference Frames ....................................................................................................... 329
9.1. Introduction ................................................................................................................................. 329
9.2. Prerequisites ................................................................................................................................. 330
9.3. Problem Description ..................................................................................................................... 330
9.4. Setup and Solution ....................................................................................................................... 330
9.4.1. Preparation .......................................................................................................................... 331
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