c81abfef05
The occurrence is from cells with vertices that are shared between two faces only (these vertices can originate from hex refinement). Decomposing both faces can occasionally produce triangles with identical vertices and this results in a non-manifold edge which triggers the erosion procedure. Avoided by detecting cells with these special vertices and making sure the tet-decomposition never uses the same points on the faces using them. Patch contributed by Mattijs Janssens
README for OpenFOAM-dev
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About OpenFOAM
OpenFOAM is a free, open source computational fluid dynamics (CFD) software package released by the OpenFOAM Foundation. It has a large user base across most areas of engineering and science, from both commercial and academic organisations. OpenFOAM has an extensive range of features to solve anything from complex fluid flows involving chemical reactions, turbulence and heat transfer, to solid dynamics and electromagnetics.
Copyright
OpenFOAM is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version. See the file COPYING in this directory or
http://www.gnu.org/licenses/, for a description of the GNU General Public
License terms under which you can copy the files.