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This will bring up the Specify Boundary Types window on the Operation Panel. We will first specify that the left edge is the inflow. Under Entity:, pick Edges so that GAMBIT knows we want to pick an edge (face is default).

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Now select the left edge by Shift-clicking on it. The selected edge should appear in the yellow box next to the Edges box as well as the Label/Type list under the Edges box.

Next to Name:, enter inflow.

For Type:, select VELOCITY_INLET. You may have to move the Specify Boundary Types box up in order to see the bottom of the list and select VELOCITY_INLET.

Click Apply. You should see the new entry appear under Name/Type box near the top of the window.

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Main Menu > File > Export > Mesh...

Type in plate.msh for the File Name:. Select Export 2d Mesh because this is a 2 dimensional mesh. Click Accept.

It is important to check that plate.msh has been created in your working directory. GAMBIT may periodically fail to write the .msh file. If this should happen, simply try writing the .msh file to another directory and then coping it into your working directory.

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