[javierCS]

Hi everybody,
Im working in a mesh that is supossed to be a beach with an "obstacle" at the bottom to study the breaking of the waves.
I got it in 2D, but now im getting a problem trying to make it 3D.
The problem is that some internal faces come out around the "obstacle". The solution, I think, is the face merging, but after reading the manual and making some tests... I am not sure I understood it correctly
Could somebody give me a lead about how to do it?

Thank you in advance

PS: Here is my bMD and an image of the resulting mesh attached

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.1.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

convertToMeters 1;

vertices
(
//cara 1
(0 -1 0) // 0
(0 1 0) // 1
(6 1 0) // 2
(15 1 0) // 3
(15 0 0) // 4
(6 -1 0) // 5

//cara 2
(0 -1 5) // 6
(0 1 5) // 7
(6 1 5) // 8
(15 1 5) // 9
(15 0 5) // 10
(6 -1 5) // 11

//cara 3
(0 -1 10) // 12
(0 1 10) // 13
(6 1 10) // 14
(15 1 10) // 15
(15 0 10) // 16
(6 -1 10) // 17

//cara 4
(0 -1 15) // 18
(0 1 15) // 19
(6 1 15) // 20
(15 1 15) // 21
(15 0 15) // 22
(6 -1 15) // 23

//plataforma
(10 -0.25 5) //24
(12.75 -0.25 5) //25
(10 -0.25 10) //26
(12.75 -0.25 10) //27

//auxiliares
(10 1 5) //28
(12.75 1 5) //29
(10 1 10) //30
(12.75 1 10) //31
);

blocks
(
hex (0 5 2 1 6 11 8 7) (10 10 10) simpleGrading (1 1 1)
hex (5 4 3 2 11 10 9 8) (10 10 10) simpleGrading (1 1 1)
hex (6 11 8 7 12 17 14 13) (10 10 10) simpleGrading (1 1 1)
hex (11 24 28 8 17 26 30 14) (10 10 10) simpleGrading (1 1 1)
hex (24 25 29 28 26 27 31 30) (10 10 10) simpleGrading (1 1 1)
hex (25 10 9 29 27 16 15 31) (10 10 10) simpleGrading (1 1 1)
hex (12 17 14 13 18 23 20 19) (10 10 10) simpleGrading (1 1 1)
hex (17 16 15 14 23 22 21 20) (10 10 10) simpleGrading (1 1 1)
);

edges
(
);

patches
(
patch inlet
((0 1 7 6)
(6 7 13 12)
(12 13 19 18))

patch outlet
((3 4 10 9)
(9 10 16 15)
(15 16 22 21))

wall bottom
((0 6 11 5)
(6 12 17 11)
(12 18 23 17)
(5 11 10 4)
(11 17 26 24)
(24 26 27 25)
(25 27 16 10)
(17 23 22 16))

patch atmosphere
((1 2 8 7)
(2 3 9 8)
(7 8 14 13)
(8 28 30 14)
(28 29 31 30)
(29 9 15 31)
(13 14 20 19)
(14 15 21 20))

);

mergePatchPairs
(
);

// ************************************************** *********************** //

[javierCS]

I solved it by adding more auxiliar blocks beside the obstacle, making the vertex coincide in order to get the "face matching".
Its not the more brilliant solution but its the one I got