[tfigueiro]

EDIT: This is now solved, I had a problem with paraview's pipeline options.

Hi,

I am trying to build a mesh with snappyHexMesh for the first time and I have been having a hard time. Right now I can't visualize the mesh in ParaView. I have attached a print screen so you can see what is happening.

Here's my snappyHexMeshDict:

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.2.0                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      snappyHexMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

// Which of the steps to run
castellatedMesh true;    // make basic mesh ?
snap            true;    // decide to snap back to surface ?
addLayers       true;   // decide to add viscous layers ?


geometry // Load in STL files here
{
	caraMetros.stl {type triSurfaceMesh; name cara;}
	cabecaMetros.stl {type triSurfaceMesh; name cabeca;}
	portatilMetros.stl {type triSurfaceMesh; name portatil;}
	lampadaMetros.stl {type triSurfaceMesh; name lampada;}
	horizontalMetros.stl {type triSurfaceMesh; name horizontal;}
	extractorMetros.stl {type triSurfaceMesh; name extractor;}
	total1267Metros.stl {type triSurfaceMesh; name total1267;}
	refinementBox {type searchableBox; min (-0.1 0 0); max (5.1 4 3.1);}
};

castellatedMeshControls
{
    maxLocalCells 1000000;  //max cells per CPU core
    maxGlobalCells 2000000; //max cells to use before mesh deletion step
    minRefinementCells 10;  //was 0 - zero means no bad cells are allowed during refinement stages
    maxLoadUnbalance 0.10;
    nCellsBetweenLevels 1;  // expansion factor between each high & low refinement zone

    // Explicit feature edge refinement
    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    features // taken from STL from each .eMesh file created by "SurfaceFeatureExtract" command
    (
        {file "caraMetros.eMesh"; level 2;} 
        {file "cabecaMetros.eMesh"; level 2;} 
        {file "portatilMetros.eMesh"; level 2;} 
        {file "lampadaMetros.eMesh"; level 3;} 
        {file "horizontalMetros.eMesh"; level 3;}
        {file "extractorMetros.eMesh"; level 3;} 
        {file "total1267Metros.eMesh"; level 1;}
        
    );

    // Surface based refinement
    // ~~~~~~~~~~~~~~~~~~~~~~~~

    refinementSurfaces // Surface-wise min and max refinement level
    {
	total1267 {level (0 2);}
        portatil {level (1 3);}
	lampada {level (1 4);} 
	cabeca {level (1 2);}
	cara {level (1 2);}  
	horizontal {level (1 3);} // was 4 4
	extractor {level (1 3);} // was 4 4
    }  


    resolveFeatureAngle 30;  // Resolve sharp angles // Default 30
    refinementRegions        // In descending levels of fine-ness
    {
        cara {mode distance; levels ((0.05 2) (0.3 1));}
        cabeca {mode distance; levels ((0.1 1));}
        portatil {mode distance; levels ((0.1 1));}
        lampada {mode distance; levels ((0.05 2) (0.2 1));}
        horizontal {mode distance; levels ((0.05 2) (0.2 1));}
        extractor {mode distance; levels ((0.05 2) (0.2 1));}
    } // was ((0.001 4) (0.003 3) (0.01 2))
    locationInMesh (2 0.1 0.1);  //to decide which side of mesh to keep **
    allowFreeStandingZoneFaces true;
}


// Settings for the snapping.
snapControls
{
    nSmoothPatch 3;
    tolerance 5;
    nSolveIter 15;
    nRelaxIter 5;
    //nFeatureSnapIter 15; // default is 10
    
// New settings from openfoam 2.2 onwards for SHMesh

implicitFeatureSnap false; // default is false - detects without doing surfaceFeatureExtract
explicitFeatureSnap true; // default is true
multiRegionFeatureSnap false; // deafault is false - detects features between multiple surfaces

}



// Settings for the layer addition.
addLayersControls //add the PATCH names from inside the STL file so STLpatchName_insideSTLName 
{
    relativeSizes false; // was true
    layers
    {
	cara
         	{nSurfaceLayers 1;} // was 3
	cabeca 
		{nSurfaceLayers 1;} // was 3
	portatil
		{nSurfaceLayers 1;} // was 3
	lampada
		{nSurfaceLayers 1;} // was 3
	horizontal
		{nSurfaceLayers 1;} // was 3
	extractor
		{nSurfaceLayers 1;} // was 3
    }

    expansionRatio 3;
    finalLayerThickness 0.1; //was 0.00016
    minThickness 0.02; //was 0.00008
    nGrow 0; // was 1 


    // Advanced settings

    featureAngle 80; // was 70 //- When not to extrude surface. 0 is flat, 90 is right angle.
    nRelaxIter 8;  //- Max# of snapping relaxation iter. Should stop before upon reaching a correct mesh.
    nSmoothSurfaceNormals 30;  // Number of smoothing iterations of surface normals
    nSmoothNormals 30; // Number of smoothing iterations of interior mesh movement direction
    nSmoothThickness 10;  // Smooth layer thickness over surface patches
    maxFaceThicknessRatio 0.5; // Stop layer growth on highly warped cells
    maxThicknessToMedialRatio 0.3; // Reduce layer growth where ratio thickness to medial distance is large
    minMedianAxisAngle 90;  // Angle used to pick up medial axis points. Was 130
    nBufferCellsNoExtrude 0;   // Create buffer region for new layer terminations
    nLayerIter 30; // Overall max number of layer addition iterations
}



// Generic mesh quality settings. At any undoable phase these determine
// where to undo.
meshQualityControls
{
    maxNonOrtho 65;
    maxBoundarySkewness 20;
    maxInternalSkewness 4;
    maxConcave 80;
    minFlatness 0.5;
    minVol 1e-10;
    minTetQuality 1e-9;
    minArea -1;
    minTwist 0.02;
    minDeterminant 0.001;
    minFaceWeight 0.02;
    minVolRatio 0.01;
    minTriangleTwist -1;

    // Advanced

    nSmoothScale 4;
    errorReduction 0.75;
}

// Advanced

debug 0;


// Merge tolerance. Is fraction of overall bounding box of initial mesh.
// Note: the write tolerance needs to be higher than this.
mergeTolerance 1E-6;


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

Here is a checkMesh:

/*---------------------------------------------------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.3.1                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
Build  : 2.3.1-262087cdf8db
Exec   : checkMesh
Date   : Jun 11 2015
Time   : 23:59:51
Host   : "tiago-SATELLITE-L50-B"
PID    : 4858
Case   : /home/tiago/OpenFOAM/OpenFOAM-2.3.1/run/mesh2-scheme1-simple
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Allowing user-supplied system call operations

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Create polyMesh for time = 0

Time = 0

Mesh stats
    points:           267121
    faces:            640842
    internal faces:   571295
    cells:            187774
    faces per cell:   6.4553
    boundary patches: 8
    point zones:      0
    face zones:       0
    cell zones:       0

Overall number of cells of each type:
    hexahedra:     135573
    prisms:        13326
    wedges:        20
    pyramids:      0
    tet wedges:    153
    tetrahedra:    2
    polyhedra:     38700
    Breakdown of polyhedra by number of faces:
        faces   number of cells
            4   102
            5   723
            6   11536
            7   376
            8   416
            9   18689
           10   8
           11   161
           12   6111
           14   49
           15   483
           16   1
           17   11
           18   34

Checking topology...
    Boundary definition OK.
    Cell to face addressing OK.
    Point usage OK.
    Upper triangular ordering OK.
    Face vertices OK.
    Number of regions: 1 (OK).

Checking patch topology for multiply connected surfaces...
                   Patch    Faces   Points                  Surface topology
                    zMin    14333    15131  ok (non-closed singly connected)
                    cara       42       56  ok (non-closed singly connected)
                  cabeca      190      216  ok (non-closed singly connected)
                portatil      184      232  ok (non-closed singly connected)
                 lampada     2668     3159  ok (non-closed singly connected)
              horizontal       87      126  ok (non-closed singly connected)
               extractor       86      124  ok (non-closed singly connected)
               total1267    51957    54368  ok (non-closed singly connected)

Checking geometry...
    Overall domain bounding box (-0.100011 -0.000417249 -2.59386e-05) (5.10024 4.00042 3.10024)
    Mesh (non-empty, non-wedge) directions (1 1 1)
    Mesh (non-empty) directions (1 1 1)
    Boundary openness (-2.98601e-16 -4.3793e-16 3.72026e-16) OK.
    Max cell openness = 3.51616e-16 OK.
    Max aspect ratio = 4.83178 OK.
    Minimum face area = 1.65398e-05. Maximum face area = 0.0123264.  Face area magnitudes OK.
    Min volume = 4.15624e-08. Max volume = 0.00117145.  Total volume = 62.3149.  Cell volumes OK.
    Mesh non-orthogonality Max: 64.0876 average: 12.9123
    Non-orthogonality check OK.
    Face pyramids OK.
    Max skewness = 2.62111 OK.
    Coupled point location match (average 0) OK.

Mesh OK.

End

Here is a link for my STL files:
https://www.dropbox.com/s/ifub0jl0z1...es.tar.gz?dl=0


Could someone please tell me wether there is something obviously wrong with what I am doing?

Thank you so much in advance for your time and attention.

Tiago Figueiró