/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  v2212                                 |
|   \\  /    A nd           | Website:  www.openfoam.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

scale   1;

// Geometric parameters
outerRadius 1;

// Divisions in x/y/z directions. Can be unequal.
nx   10;
ny   $nx;
nz   $nx;

geometry
{
    sphere
    {
        type   sphere;
        origin (0 0 0);
        radius $outerRadius;
    }
}

// Box size
vo   #eval{ sqrt($outerRadius/3) };

vertices
(
    (-$vo -$vo -$vo)
    ( $vo -$vo -$vo)
    ( $vo  $vo -$vo)
    (-$vo  $vo -$vo)
    (-$vo -$vo  $vo)
    ( $vo -$vo  $vo)
    ( $vo  $vo  $vo)
    (-$vo  $vo  $vo)
);

blocks
(
    hex (0 1 2 3 4 5 6 7) ($nx $ny $nz) grading (1 1 1)
);

edges
(
    arc 0 1 origin (0 0 0)
    arc 2 3 origin (0 0 0)
    arc 6 7 origin (0 0 0)
    arc 4 5 origin (0 0 0)

    arc 0 3 origin (0 0 0)
    arc 1 2 origin (0 0 0)
    arc 5 6 origin (0 0 0)
    arc 4 7 origin (0 0 0)

    arc 0 4 origin (0 0 0)
    arc 1 5 origin (0 0 0)
    arc 2 6 origin (0 0 0)
    arc 3 7 origin (0 0 0)
);

faces
(
    project (0 0) sphere  // x-min
    project (0 1) sphere  // x-max
    project (0 2) sphere  // y-min
    project (0 3) sphere  // y-max
    project (0 4) sphere  // z-min
    project (0 5) sphere  // z-max
);

boundary
(
    walls
    {
        type wall;
        faces
        (
            (0 0)  // x-min
            (0 1)  // x-max
            (0 2)  // y-min
            (0 3)  // y-max
            (0 4)  // z-min
            (0 5)  // z-max
        );
    }
);


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