/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | foam-extend: Open Source CFD                    |
|  \\    /   O peration     | Version:     3.2                                |
|   \\  /    A nd           | Web:         http://www.foam-extend.org         |
|    \\/     M anipulation  | For copyright notice see file Copyright         |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

convertToMeters 0.1;

vertices
(
    // Background mesh
    (-10 -5 0)
    (20 -5 0)
    (20 5.01 0)
    (-10 5.01 0)
    (-10 -5 0.5)
    (20 -5 0.5)
    (20 5.01 0.5)          // Note: point in cell issue
    (-10 5.01 0.5)

    // Cylinder, back
    ( 0 -2.5 0)
    ( 2.5  0 0)
    ( 0  2.5 0)
    (-2.5 0 0)

    ( 0 -4 0)
    ( 4  0 0)
    ( 0  4 0)
    (-4  0 0)

    // Cylinder, front
    ( 0 -2.5 0.5)
    ( 2.5  0 0.5)
    ( 0  2.5 0.5)
    (-2.5 0 0.5)

    ( 0 -4 0.5)
    ( 4  0 0.5)
    ( 0  4 0.5)
    (-4  0 0.5)
);

blocks
(
    // Background
    hex (0 1 2 3 4 5 6 7) background (300 100 1) simpleGrading (1 1 1)

    // Front
    hex (8 12 13 9 16 20 21 17) front (40 80 1) simpleGrading (1 1 1)
    hex (9 13 14 10 17 21 22 18) front (40 80 1) simpleGrading (1 1 1)
    hex (10 14 15 11 18 22 23 19) front (40 80 1) simpleGrading (1 1 1)
    hex (11 15 12 8 19 23 20 16) front (40 80 1) simpleGrading (1 1 1)
);

edges
(
    // Inner arc, back
    arc  8  9 ( 1.767767 -1.767767 0)
    arc  9 10 ( 1.767767  1.767767 0)
    arc 10 11 (-1.767767  1.767767 0)
    arc 11  8 (-1.767767 -1.767767 0)

    // Inner arc, front
    arc 16 17 ( 1.767767 -1.767767 0.5)
    arc 17 18 ( 1.767767  1.767767 0.5)
    arc 18 19 (-1.767767  1.767767 0.5)
    arc 19 16 (-1.767767 -1.767767 0.5)

    // Outer arc, back
    arc 12 13 ( 2.828427 -2.828427 0)
    arc 13 14 ( 2.828427  2.828427 0)
    arc 14 15 (-2.828427  2.828427 0)
    arc 15 12 (-2.828427 -2.828427 0)

    // Outer arc, front
    arc 20 21 ( 2.828427 -2.828427 0.5)
    arc 21 22 ( 2.828427  2.828427 0.5)
    arc 22 23 (-2.828427  2.828427 0.5)
    arc 23 20 (-2.828427 -2.828427 0.5)
);

patches
(
    patch in
    (
        (0 4 7 3)
    )
    patch out
    (
        (2 6 5 1)
    )
    wall top
    (
        (3 7 6 2)
    )
    wall bottom
    (
        (1 5 4 0)
    )
    wall cylinder
    (
        (8 16 17 9)
        (9 17 18 10)
        (10 18 19 11)
        (11 19 16 8)
    )

    patch outerCylinder
    (
        (12 13 21 20)
        (13 14 22 21)
        (14 15 23 22)
        (15 12 20 23)
    )

    empty frontAndBack
    (
        (0 3 2 1)
        (4 5 6 7)

        (8 9 13 12)
        (9 10 14 13)
        (10 11 15 14)
        (11 8 12 15)

        (16 20 21 17)
        (17 21 22 18)
        (18 22 23 19)
        (19 23 20 16)
    )
);

mergePatchPairs
(
);

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