[Claudio87]

Dear Foamers,

I'm writing because I'm having many troubles with snappyHexMesh: it doesn't snap!
I know this is "common": looking around in the forum, I found many others who have had similar problems, but none of the suggested solutions seems working in my case!

My best results are:
- one in which, starting from a very coarse background mesh, it does the snap stage, but the final mesh is useless for the simulation;
- another that would be good for the simulation (I think) but it doesn't snap, so all the surface is done by steps!

The strange thing in the second case is that in the log file of sHM I don't find the typical sentence "did not succesfully snap mesh. Giving up", and in the checkMesh I have no errors!

I tried many different combinations with the Dicts (blockMeshDict and snappyHexMeshDict):
- increasing or decreasing the intial number,
- increasing or decreasing the number of levels in sHMDict, directly for the refinementSurface or in the feature obteined with the command surfaceFeatureExtract,
- increasing the parameters in the subDict "snapControls".

Often it doesn't snap, saying "did not succesfully snap mesh. Giving up"; sometimes it doesn't say anithing, but it similarly doesn't snap!

I have no ideas now about what I can do, and about what is wrong!

I attach these two cases I obtained, with some images.
I hope someone could help me!


Best regards,
Claudio