Compressible Flow in a Nozzle

Problem Specification
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
Problem 2

Step 2: Mesh Geometry in GAMBIT

Now that we have the basic geometry of the nozzle created, we need to mesh it. We would like to create a 50x20 grid for this geometry.

Mesh Edges

As in the previous tutorials, we will first start by meshing the edges.

Operation Toolpad > Mesh Command Button > Edge Command Button > Mesh Edges

Like the Laminar Pipe Flow Tutorial, we are going to use even spacing between each of the mesh points. We won't be using the Grading this time, so deselect the box next to Grading that says Apply.

Then, change Interval Count to 20 for the side edges and Interval Count to 50 for the top and bottom edges.

(Click picture for larger image)

Mesh Face

Now that we have the edges meshed, we need to mesh the face.

Operation Toolpad > Mesh Command Button > Face Command Button > Mesh Faces

As before, select the face and click the Apply button.

(Click picture for large image)

Save Your Work

Main Menu > File > Save

Go to Step 3: Specify Boundary Types in GAMBIT