[cfdnsh]

Hello, I tried to convert an stl file using snappyHexMesh. I had no errors running blockMesh > surfaceFeatures > snappyHexMesh but then when I opened the file in paraView it only shows my blockMesh region. Below are my codes, can anyone spot the problems?

blockMeshDict

/*--------------------------------*- C++ -*----------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  10
     \\/     M anipulation  |
\*---------------------------------------------------------------------------*/
FoamFile
{
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //


convertToMeters 100;

vertices
(
    (0 0 0)
    (1 0 0)
    (1 1 0)
    (0 1 0)
    (0 0 1)
    (1 0 1)
    (1 1 1)
    (0 1 1)
);

blocks
(
    hex (0 1 2 3 4 5 6 7) (16 16 16) simpleGrading (1 1 1)
);


boundary
(
	patch0_half0
    {
        type cyclic;
        neighbourPatch patch0_half1;
        faces
        (
            (0 3 2 1)
        );
    }
    patch0_half1
    {
        type cyclic;
        neighbourPatch patch0_half0;
        faces
        (
            (4 5 6 7)
        );
    }
    patch1_half0
    {
        type cyclic;
        neighbourPatch patch1_half1;
        faces
        (
            (0 4 7 3)
        );
    }
    patch1_half1
    {
        type cyclic;
        neighbourPatch patch1_half0;
        faces
        (
            (2 6 5 1)
        );
    }
    patch2_half0
    {
        type cyclic;
        neighbourPatch patch2_half1;
        faces
        (
            (3 7 6 2)
        );
    }
    patch2_half1
    {
        type cyclic;
        neighbourPatch patch2_half0;
        faces
        (
            (1 5 4 0)
	);
    }

);

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

surfaceFeatures

/*--------------------------------*- C++ -*----------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  10
     \\/     M anipulation  |
\*---------------------------------------------------------------------------*/
FoamFile
{
    format      ascii;
    class       dictionary;
    object      surfaceFeaturesDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

surfaces
(
    "volume3.stl"
    "inlet3.stl"
    "outlet3.stl"
    "walls3.stl"
);

includedAngle   150;

subsetFeatures
{
    nonManifoldEdges yes;
    openEdges        yes;
}

trimFeatures
{
    minElem         0;
    minLen          0;
}

writeObj        yes;

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

snappyHexMeshDict

/*--------------------------------*- C++ -*----------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  10
     \\/     M anipulation  |
\*---------------------------------------------------------------------------*/
FoamFile
{
    format      ascii;
    class       dictionary;
    object      snappyHexMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

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

castellatedMesh on;
snap            off;
addLayers       off;

geometry
{
    volume
    {
        type triSurfaceMesh;
        file "volume3.stl"    
    }
    walls
    {
        type triSurfaceMesh;
        file "walls3.stl"    
    }
    inlet
    {
        type triSurfaceMesh;
        file "inlet3.stl"    
    }
    outlet
    {
        type triSurfaceMesh;
        file "outlet3.stl"    
    }

    refinementBox
    {
	 type searchableBox;
	 min (-1.0 -0.7 0.0);
	 max (8.0 0.7 2.5);
    }
};

castellatedMeshControls
{
    features
    (
//      { file "volume3.eMesh"; level 2; }
    );

    refinementSurfaces
    {
        volume3
        {
            level (2 2);
            patchInfo { type wall; }

            regions
            {
                <inletRegion>
                {
                    level (2 2);
                    patchInfo
                    {
                        type patch;
                        inGroups (inlet);
                    }
                }

                <outletRegion>
                {
                    level (2 2);
                    patchInfo
                    {
                        type patch;
                        inGroups (outlet);
                    }
                }
            }
        }
    }

    refinementRegions
    {
        volume3
        {
            mode    inside;
            level   2;
        }
    }

    insidePoint (0.50 0.50 0.60); // Offset from (0 0 0) to avoid
                                     // coinciding with face or edge
    nCellsBetweenLevels 3;
}

snapControls
{
//  explicitFeatureSnap    on;
//  implicitFeatureSnap    off;
}

addLayersControls
{
    layers
    {
        "volume3.stl"
        {
            nSurfaceLayers 2;
        }
    }

    relativeSizes       on;   // off, usually with firstLayerThickness
    expansionRatio      1.2;
    finalLayerThickness 0.5;
    minThickness        1e-3;
//  firstLayerThickness 0.01;

//  maxThicknessToMedialRatio 0.3;
}

writeFlags
(
//    scalarLevels
    layerSets
    layerFields
);

mergeTolerance 1e-6;

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