Author: Rajesh Bhaskaran & Yong Sheng Khoo, Cornell University
Problem Specification
1. Pre-Analysis & Start-up
2. Geometry
3. Mesh
4. Setup (Physics)
5. Solution
6. Results
7. Verification & Validation
Problem 1
Problem 2
Step 3: Mesh
Specify Boundary Types
Now that we have the mesh, we would like to specify the boundary conditions here in GAMBIT.
Operation Toolpad > Zones Command ButtonÂ
> Specify Boundary Types Command ButtonThis will bring up the Specify Boundary Types window on the Operation Panel. We will first specify that the left edge is the inlet. Under Entity:, pick Edges so that GAMBIT knows we want to pick an edge (face is default).
Now select the left edge by Shift-clicking on it. The selected edge should appear in the yellow box next to the Edges box you just worked with as well as the Label/Type list right under the Edges box.
Next to Name:, enter inlet
.
For Type:, select WALL.
Click Apply. You should see the new entry appear under Name/Type box near the top of the window.
Repeat for the outlet, centerline, and wall edges.
You should have the following edges in the Name/Type list when finished:
Save and Export
Main Menu > File > Save
Main Menu > File > Export > Mesh...
Type in nozzle.msh
for the File Name:. Select Export 2d Mesh since this is a 2 dimensional mesh. Click Accept.
Check nozzle.msh
has been created in your working directory.
Go to Step 4: Setup (Physics)