[suhas jain]

Hi everyone,


"
// loop over faces
forAll(faces, facei)
{
label faceI = faces[facei];

//find patch
label patchI = psi.mesh().boundaryMesh().whichPatch(faceI);

// if facei is in patch: patchI < -1
if (patchI > -1)
{
if (!isA<emptyFvPatch>(psi.boundaryField()[patchI]))
{

faceI = psi.mesh().boundaryMesh()[patchI].whichFace(faceI);
psiBoundary = psi.boundaryField()[patchI][faceI];
}

Info << " Face: " << faceI << " Psi value: " << psiBoundary;
}
}

"


I am using the above code to access the value of psi (a distance function) at the boundaries. But during the execution of the "psiBoundary"( as seen above) I am getting this error



"

--> FOAM FATAL ERROR:
attempt to access element from zero sized list

From function UList<T>::checkIndex(const label)
in file /opt/openfoam220/src/OpenFOAM/lnInclude/UListI.H at line 103.

FOAM aborting

#0 Foam::error:rintStack(Foam::Ostream&) in "/opt/openfoam220/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#1 Foam::error::abort() in "/opt/openfoam220/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#2
at /opt/openfoam220/src/OpenFOAM/lnInclude/errorManip.H:85
#3
at /opt/openfoam220/src/OpenFOAM/lnInclude/UListI.H:103
#4
at /opt/openfoam220/src/OpenFOAM/lnInclude/UListI.H:168
#5
at ~/OpenFOAM/suhas-2.2.0/applications/solvers/levelSetFoam/reinit.H:169
#6 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#7

"

I just know this is something related to the index " i " in the UListI.H but I couldn't figure out what exactly is going on there.

Any advice?

Thanks in advance,
Suhas