openfoam/tutorials/mesh/foamyHexMesh/simpleShapes/system/foamyHexMeshDict

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

// Include defaults parameters from master dictionary
#include "$WM_PROJECT_DIR/etc/caseDicts/foamyHexMeshDict"

geometry
{
    // Internal shape
    coneAndSphere_clean_orient.obj
    {
        name coneAndSphere;
        type triSurfaceMesh;
    }

    // Outside of domain
    domain_clean_orient.stl
    {
        name domain;
        type triSurfaceMesh;
        regions
        {
            ascii{ name domain_patch0; }
        }
    }

}


// Controls for conforming to the surfaces.
surfaceConformation
{
    // A point inside surfaces that is inside mesh.
    locationInMesh (0 -0.5 0);

    // Geometry to mesh to
    geometryToConformTo
    {
        coneAndSphere
        {
            featureMethod           extractFeatures;
            includedAngle           140;
            featureMethod extendedFeatureEdgeMesh;
            extendedFeatureEdgeMesh "coneAndSphere_clean_orient.extendedFeatureEdgeMesh";
        }

        domain
        {
            featureMethod           extractFeatures;
            includedAngle           125;
            featureMethod extendedFeatureEdgeMesh;
            extendedFeatureEdgeMesh "domain_clean_orient.extendedFeatureEdgeMesh";
        }
    }

    additionalFeatures
    {}
}


// Controls for seeding initial points and general control of the target
// cell size (used everywhere)
initialPoints
{
    initialPointsMethod             autoDensity;
    // initialPointsMethod          uniformGrid;
    // initialPointsMethod          bodyCentredCubic;
    // initialPointsMethod          pointFile;

    // Take boundbox of all geometry. Samples with this box. If too much
    // samples (due to target cell size) in box split box.
    autoDensityCoeffs
    {
        minCellSizeLimit 0.1;
        // Initial number of refinement levels. Needs to be enough to pick
        // up features due to size ratio. If not enough it will take longer
        // to determine point seeding.
        minLevels 4;
        // Split box if ratio of min to max cell size larger than maxSizeRatio
        maxSizeRatio 5.0;
        // Per box sample 3x3x3 internally
        sampleResolution 3;
        // Additionally per face of the box sample 3
        surfaceSampleResolution 3;
    }

    uniformGridCoeffs
    {
        // Absolute cell size.
        initialCellSize         0.0015;
        randomiseInitialGrid    yes;
        randomPerturbationCoeff 0.02;
    }

    bodyCentredCubicCoeffs
    {
        initialCellSize         0.0015;
        randomiseInitialGrid    no;
        randomPerturbationCoeff 0.1;
    }

    pointFileCoeffs
    {
        // Reads points from file. Still rejects points that are too
        // close to the surface (minimumSurfaceDistanceCoeff) or on the
        // wrong side of the surfaces.
        pointFile              "constant/internalDelaunayVertices";
    }
}


// Control size of voronoi cells i.e. distance between points. This
// determines the target cell size which is used everywhere.
// It determines the cell size given a location. It then uses all
// the rules
// - defaultCellSize
// - cellSizeControlGeometry
// to determine target cell size. Rule with highest priority wins. If same
// priority smallest cell size wins.
motionControl
{
    // Absolute cell size of back ground mesh. This is the maximum cell size.
    defaultCellSize         0.1;

    minimumCellSizeCoeff    0;

    // For background cell size and alignment grid
    maxSmoothingIterations      100;

    maxRefinementIterations     0;

    shapeControlFunctions
    {
        coneAndSphere
        {
            type                searchableSurfaceControl;
            priority            1;
            mode                bothSides;

            surfaceCellSizeFunction uniformValue;
            uniformValueCoeffs
            {
                surfaceCellSizeCoeff 0.75;
            }

            cellSizeFunction        uniform;
            uniformCoeffs
            {}
        }

        domain
        {
            type                searchableSurfaceControl;
            priority            1;
            mode                bothSides;

            surfaceCellSizeFunction uniformValue;
            uniformValueCoeffs
            {
                surfaceCellSizeCoeff 1;
            }

            cellSizeFunction        uniform;
            uniformCoeffs
            {}
        }
    }

    // Output lots and lots of .obj files
    objOutput                   no;

    // Timing and memory usage.
    timeChecks                  no;
}


// After simulation, when converting to polyMesh, filter out small faces/edges.
// Do not change. See cvControls.H
polyMeshFiltering
{
    filterEdges                 on;
    filterFaces                 on;
    writeTetDualMesh            false;
}


#include "meshQualityDict";


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