[anuargimenez]

Hi,

I've just started with AMI/MRF simulations and going through some papers I have some doubts.

In most simulations, the dimensions of the computational domain are usually much larger than those of the area under rotation. Here you can see an example:

WhatsApp Image 2022-11-03 at 13.24.14.jpeg
(article: http://www.koreascience.or.kr/articl...4753343875.pdf)

I want to simulate an extrusion screw using MRF and AMI. The problem is that there is no space between the stator and rotor, leaving a small gap for the AMI interface. Because of the problem geometry, the distance between the inlet, outlet and the rotating zone is also minimal.

Here you can see an example of my geometry:


When i run the MRF simulation, the viscosity results are not real. While running the AMI simulation it crashes.

Could it be because of the small distance between rotating zone and stationary zone?

[manuelffonseca]

Could you show us a pict of the Ami volume used? Maybe try o use the SRF (single reference frame).