Schiller Naumann with Mixture Model

Hi folks,

I have been trying to use the Schiller Naumann with Mixture Model to simulate a particle flow in water.

I have previously used the Hadamard-Rybczynski model with smaller particles (Rep <1) and had no problems in getting a steady convergence.

However, the Schiller Naumann is not making it easy for me.
With larger particles and higher density I get a Rep roughly in 500. So, the Schiller Naumann applies, and I can't use the Hadamard-Rybczynski model for the drag anymore.

But, I can't seem to get a convergence with the the Schiller Naumann model. I have searched the forum and found that using P=0 in the initial conditions might be the problem so I used about 2000 Pa (rough estimate) but still no convergence. I have attached the convergence plot for a better understanding.

The segregated group 1 is P,V,PHID; The segregated group 2 is k and epsilon; and The segregated group 3 is the slipvel.

Does anyone have some experiences with this or any advices?

Best Regards,

Rui