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

convertToMeters 0.001;

vertices
(
    // front-plane: z = +25mm
    // inlet region
    (   -50  25   25)           // pt 0
    (     0  25   25)           // pt 1
    (   -50  75   25)           // pt 2
    (     0  75   25)           // pt 3
    // outlet region
    (  -500 -75   25)           // pt 4
    (     0 -75   25)           // pt 5
    (  -500 -25   25)           // pt 6
    (     0 -25   25)           // pt 7
    // bend mid-points
    (    25   0   25)           // pt 8
    (    75   0   25)           // pt 9
    // back-plane: z = -25mm
    // inlet region
    (   -50  25   -25)          // pt 0 + 10
    (     0  25   -25)          // pt 1 + 10
    (   -50  75   -25)          // pt 2 + 10
    (     0  75   -25)          // pt 3 + 10
    // outlet region
    (  -500 -75   -25)          // pt 4 + 10
    (     0 -75   -25)          // pt 5 + 10
    (  -500 -25   -25)          // pt 7 + 10
    (     0 -25   -25)          // pt 8 + 10
    // bend mid-points
    (    25   0   -25)          // pt 8 + 10
    (    75   0   -25)          // pt 9 + 10
);

blocks
(
    hex (0 1 11 10  2 3 13 12) inlet  ( 20 20 20)  simpleGrading (1 1 1)
    hex (4 5 15 14  6 7 17 16) outlet (200 20 20)  simpleGrading (1 1 1)

    hex (1 8 18 11  3 9 19 13) bend1  ( 30 20 20)  simpleGrading (1 1 1)
    hex (5 9 19 15  7 8 18 17) bend2  ( 30 20 20)  simpleGrading (1 1 1)
);

edges
(
   // block 2
   arc  1  8  ( 17.678  17.678  25)
   arc 11 18  ( 17.678  17.678 -25)
   arc  3  9  ( 53.033  53.033  25)
   arc 13 19  ( 53.033  53.033 -25)
   // block 3
   arc  7  8  ( 17.678  -17.678  25)
   arc 17 18  ( 17.678  -17.678 -25)
   arc  5  9  ( 53.033  -53.033  25)
   arc 15 19  ( 53.033  -53.033 -25)
);

defaultPatch
{
    name walls;
    type wall;
}

boundary
(
    inlet
    {
        type patch;
        faces
        (
            (0 2 12 10)
        );
    }

    outlet
    {
        type patch;
        faces
        (
            (4 6 16 14)
        );
    }
);

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