[lollico]

Good evening everyone,
I am dealing with biphase flow (air + aluminum solid particles) in a supersonic nozzle with an open space for the outflow.
Being the powder injected radially, I have not the possibility to use an axysymmetrical formulation by means of a wedge geometry (with wedge boundary condition). In order to reduce the mesh dimension I thought to assign a cyclic/cyclicAMI boundary condition on the lateral surface of the section (bigger than 5°) of the nozzle. That's could allow me not to extrude the entire nozzle (360°). I will attach a sketch to better understanding of my case. My question is if this approach could be a good way to reduce the computational effort, avoiding the loss of the physics of the problem.
All comments and tips will be appreciated.
Thank you.
Patrizio.