SnappyHexMesh One instead of two zones
 

Hi all,

I run snappyHexMesh on a fairly complex geometry. However, the geometry (triangular surface mesh) is 100% closed and manyfold as it has been used for t-grid before. Snappyhexmesh always produces one cell zone wich is inside and outside of my geometry. However I expect only the outside part to be kept.
This means snappy thinks my geometry has a hole, right? How can I find the problematic area in the surface?

Thanks BastiL