CFD Online Discussion Forums - [blockMesh] Internal Walls

I wish to generate a mesh for the geometry below. It is an air lift reactor :

https://sites.google.com/site/balkri...me/reactor.jpg

My blockMeshDict is as follows :

Code:

/*--------------------------------*- C++ -*----------------------------------* \

| =========                 |                                                 |

| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |

|  \\    /   O peration     | Version:  1.7.0                                 |

|   \\  /    A nd           | Web:      www.OpenFOAM.com                      |

|    \\/     M anipulation  |                                                 |

\*---------------------------------------------------------------------------*/

FoamFile

{

    version     2.0;

    format      ascii;

    class       dictionary;

    object      blockMeshDict;

}

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



convertToMeters 0.01;



vertices

(

    (0 0 0)

    (9.7 0 0)

    (9.7 12 0)

    (0 12 0)

    (10.3 0 0)

    (10.3 12 0)

    (21.7 0 0)

    (21.7 12 0)

    (22.3 0 0)

    (22.3 12 0)

    (32 0 0)

    (32 12 0)

    (0 0 14)

    (9.7 0 14)

    (9.7 12 14)

    (0 12 14)

    (10.3 0 14)

    (10.3 12 14)

    (21.7 0 14)

    (21.7 12 14)

    (22.3 0 14)

    (22.3 12 14)

    (32 0 14)

    (32 12 14)

    (0 0 130)

    (9.7 0 130)

    (9.7 12 130)

    (0 12 130)

    (10.3 0 130)

    (10.3 12 130)

    (21.7 0 130)

    (21.7 12 130)

    (22.3 0 130)

    (22.3 12 130)

    (32 0 130)

    (32 12 130)

    (0 0 140)

    (9.7 0 140)

    (9.7 12 140)

    (0 12 140)

    (10.3 0 140)

    (10.3 12 140)

    (21.7 0 140)

    (21.7 12 140)

    (22.3 0 140)

    (22.3 12 140)

    (32 0 140)

    (32 12 140)

);



blocks

(

 hex (0 1 2 3 12 13 14 15) (10 10 10) simpleGrading (1 1 1)

 hex (1 4 5 2 13 16 17 14) (4 10 10) simpleGrading (1 1 1)

 hex (4 6 7 5 16 18 19 17) (10 10 10) simpleGrading (1 1 1)

 hex (6 8 9 7 18 20 21 19) (4 10 10) simpleGrading (1 1 1)

 hex (8 10 11 9 20 22 23 21) (10 10 10) simpleGrading (1 1 1)

 hex (12 13 14 15 24 25 26 27) (10 10 100) simpleGrading (1 1 1)

 hex (13 16 17 14 25 28 29 26) (4 10 100) simpleGrading (1 1 1)

 hex (16 18 19 17 28 30 31 29) (10 10 100) simpleGrading (1 1 1)

 hex (18 20 21 19 30 32 33 31) (4 10 100) simpleGrading (1 1 1)

 hex (20 22 23 21 32 34 35 33) (10 10 100) simpleGrading (1 1 1)

 hex (24 25 26 27 36 37 38 39) (10 10 10) simpleGrading (1 1 1)

 hex (25 28 29 26 37 40 41 38) (4 10 10) simpleGrading (1 1 1)

 hex (28 30 31 29 40 42 43 41) (10 10 10) simpleGrading (1 1 1)

 hex (30 32 33 31 42 44 45 43) (4 10 10) simpleGrading (1 1 1)

 hex (32 34 35 33 44 46 47 45) (10 10 10) simpleGrading (1 1 1)

  );



edges

(

);



patches

(

 patch sparger (

              (4 6 7 5)

              ) 



 patch outlet (

     (36 37 38 39)

     (37 40 41 38 )

     (40 42 43 41)

     (42 44 45 43)

     (44 46 47 45)

                      )





 wall walls

 (

     (0 1 2 3)

     (1 4 5 2)

     (6 8 9 7)

     (8 10 11 9)

     (0 3 15 12)

     (10 11 23 22 )

     (0 1 13 12)

     (3 2 14 15)

     (1 4 16 13)

     (2 5 17 14)

     (4 6 18 16)

     (5 7 19 17)

     (6 8 20 18)

     (7 9 21 19)

     (8 10 22 20)

     (9 11 23 21)

     (13 16 17 14)

     (18 20 21 19)

     (12 15 27 24)

     (13 14 26 25)

     (16 17 29 28)

     (18 19 31 30)

     (20 21 33 32)

     (22 23 35 34)

     (13 16 28 25)

     (12 13 25 24)

     (16 18 30 28)

     (15 14 26 27)

     (14 17 29 26)

     (17 19 31 29)

     (18 20 32 30)

     (19 21 33 31)

     (20 22 34 32)

     (21 23 35 33)

     (25 28 29 26)

     (30 32 33 31)

     (24 25 37 36)

     (24 27 39 36)

     (25 26 38 37)

     (25 28 40 37)

     (26 29 41 38)

     (28 30 42 40)

     (30 32 44 42)

     (31 33 45 43)

     (29 31 43 41)

     (33 35 47 45)

     (32 34 46 44)

     (34 35 47 46)

     )

);



mergePatchPairs 

(

);



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

This gives the following error on running blockMesh :

Code:

--> FOAM FATAL ERROR: 

Trying to specify a boundary face 4(13 16 17 14) on the face on cell 1 which is either an internal face or already belongs to some other patch.  This is face 16 of patch 2 named walls.



    From function polyMesh::polyMesh

(

    const IOobject&,

    const Xfer<pointField>&,

    const cellShapeList& cellsAsShapes,

    const faceListList& boundaryFaces,

    const wordList& boundaryPatchTypes,

    const wordList& boundaryPatchNames,

    const word& defaultBoundaryPatchType

)

    in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 483.



FOAM aborting



#0  Foam::error::printStack(Foam::Ostream&) in "/home/ifmg/OpenFOAM/OpenFOAM-1.7.0/lib/linuxGccDPOpt/libOpenFOAM.so"

#1  Foam::error::abort() in "/home/ifmg/OpenFOAM/OpenFOAM-1.7.0/lib/linuxGccDPOpt/libOpenFOAM.so"

#2  Foam::polyMesh::polyMesh(Foam::IOobject const&, Foam::Xfer<Foam::Field<Foam::Vector<double> > > const&, Foam::List<Foam::cellShape> const&, Foam::List<Foam::List<Foam::face> > const&, Foam::List<Foam::word> const&, Foam::List<Foam::word> const&, Foam::word const&, Foam::word const&, Foam::List<Foam::word> const&, bool) in "/home/ifmg/OpenFOAM/OpenFOAM-1.7.0/lib/linuxGccDPOpt/libOpenFOAM.so"

#3  

 in "/home/ifmg/OpenFOAM/OpenFOAM-1.7.0/applications/bin/linuxGccDPOpt/blockMesh"

#4  

 in "/home/ifmg/OpenFOAM/OpenFOAM-1.7.0/applications/bin/linuxGccDPOpt/blockMesh"

#5  

 in "/home/ifmg/OpenFOAM/OpenFOAM-1.7.0/applications/bin/linuxGccDPOpt/blockMesh"

#6  __libc_start_main in "/lib/tls/i686/cmov/libc.so.6"

#7  

 in "/home/ifmg/OpenFOAM/OpenFOAM-1.7.0/applications/bin/linuxGccDPOpt/blockMesh"

Aborted

How do i specify wall boundary condition for the internal walls . I checked the forums for the same but no topic could help me out . Do suggest me on how to overcome this error .