[dewey]

Hi, i am trying to run a chtMultiRegionFoam, i have 3 bodyes, the fluid pipe, and inside i have 2 obstacles, 1 solid, and one porous.
My mesh was created with ansys and exported, later i used the command
splitMeshRegions -cellZones -overwrite in order to put my 3 domains,
but when create the porous zone, this command create the internal faces as wall, how can avoid this? the fluid flow through the porous media. this 2 walls have to be internal faces

porosity_to_part_4-solid
{
type mappedWall;
inGroups 1(wall);
nFaces 24192;
startFace 1479713;
sampleMode nearestPatchFace;
sampleRegion part_4-solid;
samplePatch part_4-solid_to_porosity;
}