Fluent 6.1.22 can't remove unreferenced faces of hexcore


When the mesh has faces that are not attached to any cells or faces that are attached to cells/zones that have a type 'dead', FLUENT is supposed to delete those faces and dead cells.

But if the mesh comes from TGrid hexcore, this process fails. The following error appears when it is read in v6.1.22:

Removing 7 unreferenced faces, zone 22.
Removing 58 unreferenced faces, zone 21.
Removing 408 unreferenced faces, zone 15.
Removing 58 unreferenced faces, zone 14.
Removing 480 unreferenced faces, zone 7.
Removing 4238 unreferenced faces, zone 4.
Removing 4014 unreferenced faces, zone 46.
Removing 2968 unreferenced faces, zone 79.
Error: Internal error at line 3683 in file 'mem.c'.
face status not allocated and/or initialized
Error Object: #f
The workaround is to delete the dead zones and the unreferenced faces in tgrid. You may need to separate faces by region to isolate them from those that are attached to cells.





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