/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  v2506                                 |
|   \\  /    A nd           | Website:  www.openfoam.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

scale   0.001;

xin     -50;
xout    -500;
rad0    25;
rad1    75;
zmax    25;

nxin    20;
nxout   200;
nxbend  30;
ny      20;
nz      20;

// Coarser and smaller
#if 0
xin     #eval{ $xin / 5 };
xout    #eval{ $xout / 5 };
zmax    #eval{ $zmax / 5 };

nxin    #eval{ round ($nxin / 5) };
nxout   #eval{ round ($nxout / 5) };
nz      #eval{ round ($nz / 5) };
#endif

zmin    #eval{ -$zmax };

vertices
(
    // back-plane:
    // inlet region
    (  $xin   $rad0  $zmin)     // pt 0
    (     0   $rad0  $zmin)     // pt 1
    (     0   $rad1  $zmin)     // pt 2
    (  $xin   $rad1  $zmin)     // pt 3
    // outlet region
    ( $xout  -$rad1  $zmin)     // pt 4
    (     0  -$rad1  $zmin)     // pt 5
    (     0  -$rad0  $zmin)     // pt 6
    ( $xout  -$rad0  $zmin)     // pt 7
    // bend mid-points
    ( $rad0       0  $zmin)     // pt 8
    ( $rad1       0  $zmin)     // pt 9
    // front-plane:
    // inlet region
    (  $xin   $rad0  $zmax)     // pt 0 + 10
    (     0   $rad0  $zmax)     // pt 1 + 10
    (     0   $rad1  $zmax)     // pt 2 + 10
    (  $xin   $rad1  $zmax)     // pt 3 + 10
    // outlet region
    ( $xout  -$rad1  $zmax)     // pt 4 + 10
    (     0  -$rad1  $zmax)     // pt 5 + 10
    (     0  -$rad0  $zmax)     // pt 6 + 10
    ( $xout  -$rad0  $zmax)     // pt 7 + 10
    // bend mid-points
    ( $rad0       0  $zmax)     // pt 8 + 10
    ( $rad1       0  $zmax)     // pt 9 + 10
);

blocks
(
    hex (0 1 2 3  10 11 12 13) inlet  ( $nxin   $ny $nz)  simpleGrading (1 1 1)
    hex (4 5 6 7  14 15 16 17) outlet ( $nxout  $ny $nz)  simpleGrading (1 1 1)
    hex (1 8 9 2  11 18 19 12) bend1  ( $nxbend $ny $nz)  simpleGrading (1 1 1)
    hex (5 9 8 6  15 19 18 16) bend2  ( $nxbend $ny $nz)  simpleGrading (1 1 1)
);

edges
(
    // block 2
    arc  1  8  origin (0 0 $zmin)
    arc  2  9  origin (0 0 $zmin)
    arc 11 18  origin (0 0 $zmax)
    arc 12 19  origin (0 0 $zmax)
    // block 3
    arc  6  8  origin (0 0 $zmin)
    arc  5  9  origin (0 0 $zmin)
    arc 16 18  origin (0 0 $zmax)
    arc 15 19  origin (0 0 $zmax)
);

boundary
(
    inlet
    {
        type patch;
        faces
        (
            (0 10 13 3)
        );
    }

    outlet
    {
        type patch;
        faces
        (
            (4 14 17 7)
        );
    }
);

mergePatchPairs
(
);

// The defaultFaces == outside "walls"
defaultPatch
{
    name walls;
    type wall;
}


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