/*--------------------------------*- 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
    (-5 -5 -0.5)
    (5 -5 -0.5)
    (5 5 -0.5)
    (-5 5 -0.5)
    (-5 -5 0.5)
    (5 -5 0.5)
    (5 5 0.5)
    (-5 5 0.5)

    // Cylinder, back
    ( 0 -1 -0.5)
    ( 1  0 -0.5)
    ( 0  1 -0.5)
    (-1 0 -0.5)

    ( 0 -3 -0.5)
    ( 3  0 -0.5)
    ( 0  3 -0.5)
    (-3 0 -0.5)

    // Cylinder, front
    ( 0 -1 0.5)
    ( 1  0 0.5)
    ( 0  1 0.5)
    (-1 0 0.5)

    ( 0 -3 0.5)
    ( 3  0 0.5)
    ( 0  3 0.5)
    (-3 0 0.5)
);

blocks
(
    // Background
    hex (0 1 2 3 4 5 6 7) background (50 50 1) simpleGrading (1 1 1)

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

edges
(
    // Inner arc, back
    arc  8  9 ( 0.7071 -0.7071 -0.5)
    arc  9 10 ( 0.7071  0.7071 -0.5)
    arc 10 11 (-0.7071  0.7071 -0.5)
    arc 11  8 (-0.7071 -0.7071 -0.5)

    // Inner arc, front
    arc 16 17 ( 0.7071 -0.7071 0.5)
    arc 17 18 ( 0.7071  0.7071 0.5)
    arc 18 19 (-0.7071  0.7071 0.5)
    arc 19 16 (-0.7071 -0.7071 0.5)

    // Outer arc, back
    arc 12 13 ( 2.12132 -2.12132 -0.5)
    arc 13 14 ( 2.12132  2.12132 -0.5)
    arc 14 15 (-2.12132  2.12132 -0.5)
    arc 15 12 (-2.12132 -2.12132 -0.5)

    // Outer arc, front
    arc 20 21 ( 2.12132 -2.12132 0.5)
    arc 21 22 ( 2.12132  2.12132 0.5)
    arc 22 23 (-2.12132  2.12132 0.5)
    arc 23 20 (-2.12132 -2.12132 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
(
);

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