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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:
Image Added
 

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.

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