[Gmsh] 2D boundary layer mesh

[Ivan Flaminio Cozza]

Hi to everybody!
I need to mesh a 2D multiflapped wing section, and I have to import it 
in OpenFOAM, so I need to extrude it in the spanwise direction with one 
single cell, in order to do a 2D calculation.
I'm having problems in generating the boundary layer mesh, as the  
extrude{surface{}}  command do not works with lines (extrusion of lines 
in normal direction),  and seems that I cannot use extrude{surface{}} if 
my domain is for example a square with an hole, like this:

__________
|                   |
|      __         |
|      |_ |        |
|__________|

(The hole pass run through the whole domain).
Anyone has an idea on how to mesh something like this?
Thank you,
Ivan

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Ivan Flaminio Cozza

PhD Student - Aeroacoustics Research Group
DIASP - Dipartimento di Ingegneria Aeronautica e Spaziale
Politecnico di Torino
Corso Duca degli Abruzzi, 24
Torino (To)
10129 Italy
e-mail: ivan.cozza at polito.it
tel   : +39 011 0906839
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