[DanielePeri]

Hi!
I am simulating a planing hull (Fr = 2.5) using interFoam. I compute forces by using the DTChull example, but I am not sure about the treatment of the air entrainment.

As far as I understand, the lib (forces) is able to discriminate between wetted and dry portions of the hull surface, but it is not clear to me what happens when, in some (relevant) parts of the hull, alpha.water is not 0 or 1. By the way, only the water density is explicitly assigned, and not the air density... and air resistance becomes not negligible in this case.

There is something I can do in order to properly compute forces in such a situation or what I am doing is enough?

Thanks

Daniele