[Nkl]

Hi everyone.

I don't really understand where in my mesh there is no consistency.

I get this error message when I try to run blockMesh for this mesh region:
Inconsistent number of faces between block pair 4 and 6.

Here is my blockMeshDict file:

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.3.1                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

convertToMeters 0.001;

vertices
(
    (0 0 0)
    (24.35 0 0)
    (26 0 0)
    (28.50 0 0)
    (0 250 0)
    (24.35 250 0)
    (26 250 0)
    (28.50 250 0)
    (0 10250 0)
    (24.35 10250 0)
    (26 10250 0)
    (28.50 10250 0)
    (24.35 10471.50 0)
    (26 10471.50 0)
    (28.50 10471.50 0)
    (0 10495.20 0)
    (0 10496.85 0) 
    (0 10498.35 0)
    (0 0 0.3)
    (24.35 0 0.3)
    (26 0 0.3)
    (28.50 0 0.3)
    (0 250 0.3)
    (24.35 250 0.3)
    (26 250 0.3)
    (28.50 250 0.3)
    (0 10250 0.3)
    (24.35 10250 0.3)
    (26 10250 0.3)
    (28.50 10250 0.3)
    (24.35 10471.50 0.3)
    (26 10471.50 0.3)
    (28.50 10471.50 0.3)
    (0 10495.20 0.3)
    (0 10496.85 0.3) 
    (0 10498.35 0.3)
);

blocks
(
    hex (0 1 5 4 18 19 23 22) (24 250 1) simpleGrading (1 1 1)
    hex (2 3 7 6 20 21 25 24) (2 250 1) simpleGrading (1 1 1)
    hex (4 5 9 8 22 23 27 26) (24 100 1) simpleGrading (1 1 1)
    hex (6 7 11 10 24 25 29 28) (2 100 1) simpleGrading (1 1 1)
    hex (8 9 12 15 26 27 30 33) (24 245 1) simpleGrading (1 1 1)
    hex (10 11 14 13 28 29 32 31) (2 221 1) simpleGrading (1 1 1)
    hex (12 13 16 15 30 31 34 33) (2 26 1) simpleGrading (1 1 1)
    hex (13 14 17 16 31 32 35 34) (2 28 1) simpleGrading (1 1 1)
);

edges
(
    arc 15 12 (17.21805012 10488.71805 0)
    arc 33 30 (17.21805012 10488.71805 0.3)
    arc 16 13 (18.38477631 10489.88478 0)
    arc 34 31 (18.38477631 10489.88478 0.3)    
    arc 17 14 (20.152543226 10491.65254326 0)
    arc 35 32 (20.152543226 10491.65254326 0.3)   
);

boundary
(
    inlet
    {
        type patch;
        faces
        (
            (0 1 19 18)
        );
    }
    outlet
    {
        type patch;
        faces
        (
            (2 3 21 20)
        );
    }
    walls
    {
        type wall;
        faces
        (
            (1 5 23 19)
            (5 9 27 23)
            (9 12 30 27)
            (12 13 31 30)
            (13 10 28 31)
            (10 6 24 28)
            (6 2 20 24)
            (3 7 25 21)
            (7 11 29 25)
            (11 14 32 29)
            (14 17 35 32)
        );
    }
    left
    {
        type symmetryPlane;
        faces
        (
            (4 0 18 22)
            (8 4 22 26)
            (15 8 26 33)
            (16 15 33 34)
            (17 16 34 35)  
        );
    }
    frontAndBack
    {
        type empty;
        faces
        (
            (0 4 5 1)
            (2 6 7 3)
            (4 8 9 5)
            (6 10 11 7)
            (8 15 12 9)
            (10 13 14 11)
            (12 15 16 13)
            (13 16 17 14)
            (18 22 23 19)
            (20 24 25 21)
            (22 26 27 23)
            (24 28 29 25)
            (26 33 30 27)
            (28 31 32 29)
            (30 33 34 31)
            (31 34 35 32)
        );
    }        
);

mergePatchPairs
(
);

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

Thanks in advance for the help!

[Antimony]

Hi,

Basically on the line connecting vertices 30 and 33 in block 4 you have 24 cells, while on block 6 you have 26 cells.

Hence you have the error message.

Cheers,
Antimony

P.S. You will have a similar issue with blocks 6 and 7 that you would need to correct for as well

[Nkl]

Thanks!

That actually solved the problem