Configuration of the Multiple Perpendicular Flaps tutorial case

If the two solids are touching each other, then I am not sure. I don’t have any experience with modelling contacts.

In principle, yes, you would need to also define an interface (and everything else) for the solid-solid interaction. But expect issues, since this is something now yet commonly done with preCICE. I expect at least the sliding meshes to be an issue (see also FSI with CalculiX explicit solver and sliding contact).

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