preservePatches with decomposeParDict
 

Hi all,

I'm having some issues with snappyHexMesh on OpenFOAM v1812. I wish to keep my inlet patch on one processor. This is because I've manually mapped the inlet fluid flow from the outlet of a previous case, and when decomposing and then reconstructing the mesh my faces must be rearranged since the inlet flow no longer matches the mapped case and is distorted.

I've used topoSet and the contraints subdictionary in decomposeParDict to keep my inlet on one processor (successfully), but when using snappyHexMesh (even with the -decomposeParDict entry), it seems to ignore the constraints section and splits the inlet patch over a range of processors.

Is there a way to fix this? I could run it in series but then it would take far too long.

I've attached the log files below (log.snappyHexMesh slightly edited to be within max file size).

Thanks!
Dan