[Claudio87]

Hi everybody!

I tried to find the answers to my problem in the forum, but without success
I'm a beginner with OF, and with SHM in particular, so I wanted to start with something simple: a pipe (because I need to learn about similar internal flows).

Now, I read the guide and I consulted the tutorials (the motorBike one in particular) but I have some problems.
For now, the most important is with the mesh. I created the surface, a pipe with a thickness, as .stl file. I used blockMesh to create the background mesh and then snappyHexMesh. The result is strange. Instead to obtain the pipe, I obtain something different: OF subtracts the surface I created from the background mesh... I don't understand why!

To be more clear, I attach the files "blockMesh" and "snappyHexMesh" and a figure.
If someone could help me, I'd be really grateful!

Regards,
Claudio