checkMesh reports nonManifoldPoints on faceZones, which it shouldn't

Summary

checkMesh reports nonManifoldPoints on faceZones, which it shouldn't.

Steps to reproduce

Use:

pimpleFoam/LES/channel395

Run:

blockMesh

Just change the faceZones file to include some internal faces, see attached file:

faceZones

Then run:

checkMesh

Example case

pimpleFoam/LES/channel395

plus attached file

What is the current bug behaviour?

It gives error message:

Checking faceZone topology for multiply connected surfaces...
    FaceZone            Faces    Points   Surface topology                  
    someFaces           5        11       multiply connected (shared edge)  
  <<Writing 2 conflicting points to set nonManifoldPoints

What is the expected correct behavior?

It should not give an error message, since faces are always nonManifold (as far as I understand).

Relevant logs and/or images

See above

Environment information

• OpenFOAM version : v2006
• Operating system : Ubuntu
• Hardware info :
• Compiler : gcc

Possible fixes

assigned to @kuti

added bug label

changed milestone to %v2112

added community label

A faceZone is usually a 'flat' set of faces, e.g. to measure something or inflate cells to. In these case you do want to check for each edge having only one or two faces connected to it.

changed milestone to %v2206

pitzDaily.tgz

Attached a case with a topoSetDict to generate a faceZone. I think the warning message is correct. Will close the bug for now.

closed