foamToVTK error for post-processing in Paraview. Error: cell, tetFace and tetPt search failure at position (0.0139743

Dear All,

I am performing a simulation similar to the ErgunTestMPI test, but with a different geometry than the cylinder showed in the tutorial. My geometry comes from three STL files. created with a CAD. From the STL files (inlet.stl, outlet.stl, wall.stl) I generated a volumetric mesh, employing the "snappyHexMesh", and I run successfully a CFDEM coupling, where an inlet gas (CFD) is moving the DEM particles.

My question is about the post-processing with Paraview.

I can visualise the "file.foam" file, with all the "mesh regions", as the "internal mesh", "inlet", "outlet", "wall", "lagrangian/paticle cloud", but when I try to convert the foam file to VTK (from the terminal, typing the command "foamToVTK") I get the following error message:

***************************************************************
[limone@limone processor1]$ foamToVTK
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 3.0.x |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 3.0.x-ac3f6c67e02f
Exec : foamToVTK
Date : Sep 05 2017
Time : 14:45:49
Host :
PID :
Case : /data/ErgunTestMPI2c/CFD/processor1
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 mesh for time = 0

Deleting old VTK files in "/data/ErgunTestMPI2c/CFD/processor1/VTK"

At time: 0.005 detected cloud directory : "particleCloud"
Time: 0
volScalarFields : p Ksl nut voidfraction epsilon rho
volVectorFields : Us U

Internal : "/data/ErgunTestMPI2c/CFD/processor1/VTK/processor1_0.vtk"
Original cells:1618763 points:1680053 Additional cells:225012 additional points:23258

Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/maxY/maxY_0.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/minX/minX_0.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/maxX/maxX_0.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/minY/minY_0.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/minZ/minZ_0.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/maxZ/maxZ_0.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/wall/wall_0.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/inlet/inlet_0.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/outlet/outlet_0.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/procBoundary1to0/procBoundary1to0_0.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/procBoundary1to3/procBoundary1to3_0.vtk"
Lagrangian: "/data/ErgunTestMPI2c/CFD/processor1/VTK/lagrangian/particleCloud/particleCloud_0.vtk"
Time: 0.005
volScalarFields : p Ksl voidfraction rho
volVectorFields : stored_U Us U

Internal : "/data/ErgunTestMPI2c/CFD/processor1/VTK/processor1_10.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/maxY/maxY_10.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/minX/minX_10.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/maxX/maxX_10.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/minY/minY_10.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/minZ/minZ_10.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/maxZ/maxZ_10.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/wall/wall_10.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/inlet/inlet_10.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/outlet/outlet_10.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/procBoundary1to0/procBoundary1to0_10.vtk"
Patch : "/data/ErgunTestMPI2c/CFD/processor1/VTK/procBoundary1to3/procBoundary1to3_10.vtk"
surfScalarFields : phi
Lagrangian: "/data/ErgunTestMPI2c/CFD/processor1/VTK/lagrangian/particleCloud/particleCloud_10.vtk"
labels :
scalars : r
vectors : v
spherical tensors :
symm tensors :
tensors :

--> FOAM FATAL ERROR:
cell, tetFace and tetPt search failure at position (0.0139743895097 -0.0389545171037 0.000510398559073)
for requested cell 0
If this is a restart or reconstruction/decomposition etc. it is likely that the write precision is not sufficient.
Either increase 'writePrecision' or set 'writeFormat' to 'binary'

From function void Foam::particle::initCellFacePt()
in file /home/appuser/OpenFOAM/OpenFOAM-3.0.x/src/lagrangian/basic/lnInclude/particleI.H at line 735.

FOAM aborting

#0 Foam::error::printStack(Foam::Ostream&) at ??:?
#1 Foam::error::abort() at ??:?
#2 ? at ??:?
#3 ? at ??:?
#4 ? at ??:?
#5 __libc_start_main in "/lib64/libc.so.6"
#6 ? at ??:?
Aborted (core dumped)
[limone@limone processor1]$ foamToVTK
***************************************************************

In the "controlDict" file I have already increased 'writePrecision' from 6 to 12 (but without any improvement) and the 'writeFormat' was already 'binary':

***************************************************************
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.6 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "system";
object controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

application cfdemSolverPiso;
startFrom startTime;
startTime 0;
stopAt endTime;
endTime 10;
deltaT 0.0005;
writeControl adjustableRunTime;
writeInterval 0.005;
purgeWrite 0;
// writeFormat ascii;
writeFormat binary;
writePrecision 12;
writeCompression uncompressed;
timeFormat general;
timePrecision 12;
runTimeModifiable yes;
adjustTimeStep no;
maxCo 0.1;
***************************************************************

Do you have any suggestion on how to get successfully the VTK files with "foamToVTK" ?
In the original ErgunTestMPI test I obtained the VTK files without problems.

Best regards,
Limone