[Bramasole]

Hello everybody,

I have to simulate a small sailboat in Upwind conditions but I am encountering some problems with the baffle interfaces.

As I need to mesh the sails (main and jib) I need to convert them into baffle interfaces (as many others do) to have a zero-thickness boundary to generate the mesh.

I was able to do it one time and started the computation. The problem started when I changed the domain (changed the importing CAD file) to analyze different sails regulations.
When I want to convert the boundaries into interfaces the option is not active anymore (see the image in attach).

I tried to change the CAD file but nothing changed. Any suggestions?

Thank you