ANSYS Fluent: Turbulent Backward Facing Step | Tutorial

In this video we take a first look at Turbulence modeling in ANSYS. The problem of flow over a backward facing step is a classic problem in fluid mechanics. This is a great model for getting started with understanding turbulence modeling from a practical standpoint.

Experimental Data for Validation:
https://turbmodels.larc.nasa.gov/back...

How to Create an Inlet Profile:
   • ANSYS Fluent: How to Write/Read Boundary P...  

How to Perform a Mesh Refinement Study:
   • ANSYS Fluent: Mesh Independence Study | Tu...  

----------- Video Content ---------------------------
0:00 - Problem Statement
2:00 - Spaceclaim Geometry
1:58 - Spaceclaim Geometry
2:32 - Meshing
8:30 - Fluent
21:10 - CFD Post Analysis
16:08 - Fluent
28:10 - Conclusion
--------------------------------------------------------------

Have a question related to Ansys Fluent? Leave a comment!

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Fully developed flow profile at inlet:

((developed_line point 80)
(x
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
2.75
)
(y
0.010004999
0.010016
0.0100292
0.010045039
0.010064047
0.010086857
0.010114228
0.010147074
0.01018649
0.010233788
0.010290544
0.010358654
0.010440385
0.010538463
0.010656155
0.010797386
0.010966863
0.011170236
0.011414283
0.01170714
0.012058567
0.012480281
0.012986338
0.013593605
0.014322326
0.015196792
0.016246151
0.017505379
0.019016456
0.020829746
0.023693815
0.027443815
0.031193815
0.034943812
0.038693815
0.042443812
0.04622202
0.050060593
0.053946279
0.057868905
0.061844908
0.065826721
0.069754854
0.073649459
0.077505298
0.081298873
0.085056186
0.088806182
0.092556186
0.096306182
0.099170253
0.10098355
0.10249461
0.10375385
0.1048032
0.10567766
0.10640639
0.10701366
0.10751972
0.10794143
0.10829286
0.10858572
0.10882976
0.10903314
0.10920261
0.10934384
0.10946153
0.10955961
0.10964134
0.10970946
0.10976622
0.10981351
0.10985292
0.10988577
0.10991314
0.10993595
0.10995496
0.1099708
0.109984
0.109995
)
(velocity-magnitude
1.1718179
3.7469068
6.7924743
10.203098
13.610354
16.621561
19.127108
21.207373
22.963875
24.476711
25.804688
26.991205
28.069138
29.064114
29.996439
30.878111
31.71652
32.54369
33.395691
34.27417
35.171818
36.083839
37.008537
37.945976
38.897194
39.863777
40.847439
41.849979
42.876244
43.94038
45.373775
46.85738
48.058464
49.014503
49.715973
50.175613
50.450146
50.604183
50.684135
50.717167
50.718372
50.687393
50.609703
50.457428
50.181385
49.716736
49.011738
48.055817
46.855583
45.372543
43.939384
42.875366
41.849182
40.846691
39.86306
38.8965
37.945293
37.007862
36.083172
35.171158
34.273521
33.395061
32.543083
31.715937
30.877544
29.99589
29.063585
28.068621
26.990704
25.804201
24.476221
22.963379
21.206884
19.126577
16.621027
13.609829
10.202597
6.7920952
3.7466877
1.1717484
)
)