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Turbulent Pipe Flow |
1. Create Geometry in GAMBIT
2. Mesh Geometry in GAMBIT
3. Specify Boundary Types in GAMBIT
4. Set Up Problem in FLUENT
5. Solve!
6. Analyze Results
7. Refine Mesh
Problem 1
Step 3: Specify Boundary Types in GAMBIT
Recall that we created the following boundary types for the 100x5 mesh in the Laminar Pipe Flow tutorial:
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Edge Position
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Name
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Type
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Left
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inlet
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VELOCITY_INLET
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Right
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outlet
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PRESSURE_OUTLET
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Top
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wall
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WALL
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Bottom
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centerline
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AXIS
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These boundary types are still retained even if the edges are remeshed since the edges themselves were not deleted. To verify this:
Operation Toolpad > Zones Command Button 
> Specify Boundary Types
Check that the following is in the Name/Type list:
Additionally, click on show labels. You should now be able to see each of the boundary names on the respective edges in the Graphics Window. Verify that the boundary types specification is correct.
Save and Export
As in the previous tutorial, we will now save and export the mesh.
Main Menu > File > Save
Main Menu > File > Export > Mesh...
Type in pipe100x30.msh for the File Name:. Select Export 2d Mesh since this is a two-dimensional mesh. Click Accept.
Check that pipe100x30.msh has been created in your working directory.
Exit GAMBIT: Main Menu > File > Exit and save the session.