[alfiogn]

Hi foamers!

I’ve a question on cyclic boundary conditions.

I'm trying to simulate a 3D single screw extruder. The screw of course has a periodicity.

If I want to simulate a whole periodicity then I can set cyclic BCs between inlet and outlet.

However, if for some reason, I want to simulate a quarter, I will have an outlet rotate by 90 degrees with respect to the inlet.

I’ve checked out cyclic and cyclicAMI with rotational and translational transformations, but I’ve found out that I need a “rototranslational” one.

For what I know this is not possible, is it true? Does someone knows a way to bypass this issue?

Thanks a lot
Giorgio