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Now select the volume to mesh and press ESC.
Then a window appears where the number of subdivisions for the volume limit lines should be entered.
Enter 10 and click Assign and select one of the lines in X axis, the parallel lines are also selected. Press ESC.
The same window appears again, click Assign and select one of the lines in Y axis, the parallel ones are also selected. Press ESC.
Again click Assign and select one of the lines in Z axis, the parallel ones are also selected. Press ESC.
Click Close when the window appears again.
Then, create again the mesh.
NOTE: GiD only allows the generation of structured meshes of 6-sided volumes.
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