openfoam/tutorials/mesh/snappyHexMesh/faceZoneRegions/system/snappyHexMeshDict

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  v2306                                 |
|   \\  /    A nd           | Website:  www.openfoam.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      snappyHexMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#includeEtc "caseDicts/mesh/generation/snappyHexMeshDict.cfg"

castellatedMesh on;
snap            on;
addLayers       off;

geometry
{
    dummy
    {
        type    box;
        min     (0 0 0);
        max     (1 1 1);
    }
    fixed.obj
    {
        // Rename some of the regions inside the obj file
        type triSurfaceMesh;
        name fixed;
        regions
        {
            patch0 { name slipWall; }
            patch1 { name outlet; }
            patch2 { name inlet; }
        }
    }

    box-randomAligned.stl
    {
        // Rename some of the regions inside the obj file
        type triSurfaceMesh;
        name rotatingZone;
        regions
        {
            front { name myFront; }
        }
    }
}

castellatedMeshControls
{
    features
    (
      { file "fixed.eMesh"; level 2; }
      { file "rotatingZone.eMesh"; level 4; }
    );

    refinementSurfaces
    {
        fixed
        {
            level       (2 2);
            patchInfo   { type wall; }
            inGroups    (fixed);

            // Override per-patch information
            regions
            {
                patch0
                {
                    level (3 3);
                    patchInfo { type patch; }
                }

                patch1
                {
                    level (2 2);
                    patchInfo { type patch; }
                }

                patch2
                {
                    level (2 2);
                    patchInfo { type patch; }
                }
            }
        }
        rotatingZone
        {
            level       (4 4);

            // How to handle faceZones
            //  a. no faceZone. No keyword 'faceZone' or 'faceZoneNaming'
            //  b. single user-specified faceZone:
            //      faceZone myZone;
            //  c. faceZones according to the surface/region:
            //      faceZoneNaming region;

            // c. faceZones according to the surface/region
            faceZoneNaming  region;

            cellZone    rotatingZone;
            cellZoneInside  inside;
        }

    }

    refinementRegions
    {
        fixed
        {
            mode inside;
            levels ((1e-5 1));
        }
        rotatingZone
        {
            mode inside;
            levels ((1e-5 4));
        }
    }

    locationInMesh (1e-5 -1e-2 1e-5);// Offset from (0 0 0) to avoid
                                     // coinciding with face or edge and keep
                                     // away from disk itself

    allowFreeStandingZoneFaces  false;

    // Optional: switch off topological test for cells to-be-squashed
    //           and use geometric test instead
    useTopologicalSnapDetection false;
}

snapControls
{
    tolerance 1.0;
    implicitFeatureSnap     true;
    strictRegionSnap        true;
}

addLayersControls
{
    layers
    {
    }

    relativeSizes       true; // false, usually with firstLayerThickness
    expansionRatio      1.2;
    finalLayerThickness 0.5;
    minThickness        1e-3;
}

meshQualityControls
{
//    minTetQuality -1e+30;
}


mergeTolerance 1e-6;


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