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Operation Toolpad > Geometry Command Button > Group Command Button > Create Group

Select Edges and enter farfield1 for Label, which is the name of the group. Select the edges AF and EF.

Note that GAMBIT adds the edge to the list as it is selected in the GUI.

Click Apply.

In the transcript window, you will see the message "Created group: farfield1 group".

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Operation Toolpad > Zones Command Button > Specify Boundary Types

Under Entity, select Groups.

Select any edge belonging to the airfoil surface and that will select the airfoil group. Next to Name:, enter airfoil. Leave the Type as WALL.

Click Apply.

In the Transcript Window, you will see a message saying "Created Boundary entity: airfoil".

Similarly, create boundary entities corresponding to farfield1, farfield2 and farfield3 groups. Set the Type to Pressure Outlet in each case.

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Save the file as airfoil.msh.

Make sure that the Export 2d Mesh option is selected.

Check to make sure that the file is created.

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