[vahidshahabi]

I want to simulate a channel flow in a periodically repeating geometry, themesh generator is Gambit, I define my boundary conditions in gambit using"wall" not "periodic" or something else, after i converted the mesh with fluentMeshToFoam, in constant/polymesh/boundaryi changed wall to cyclic for my periodic boundaries(inlet& outlet). Asshown in blow
boundaryField
{
outlet
{
type cyclic;
neighbourPatch inlet;
}
inlet
{
type cyclic;
neighbourPatch outlet;
}
wall-h
{
type fixedValue;
value uniform 300;
}
wall-c
{
type fixedValue;
value uniform 200;
}
frontAndBackPlanes
{
type empty;
}
}


its ok, but after some times, I havefollowing error message
FOAM FATAL ERROR, attemo to casttype patch to type LduInterface
FOAM aborting, foam::error:rint stack
Can you tell me how i solve this issue.

Thank you for your help.