Cyclone separator does not converge.
 

Hello everyone,

I have a problem with cyclone separator. For 3 days, I searched the forum about how many relevant topics, but it did not help me to solve my problem. In addition, although I tried the setups in the videos on youtube and ansys tutorials websites, my problem did not converge. I tried many different settings. For example, I tried to reduce my relaxation factors, I turn on&off "high order relaxation factor", I turn on&off "Prevent reverse flow"or "radial equilibrium pressure distribution" from BC section but it didnt work. If I use first order solution methods on spatial discretization, problem was converge sometimes (yeah sometimes although I choose first order methods and again didnt converge) but when I change my solution methods from first order to second order my problem will diverge. I use poly mesh and my max skewness value on surface mesh is equal to 0.46 and my max skewness value in volume cell is 0.79. I really do not understand that where is my mistake in the problem. I attached some screenshots from my problem. Can you help me to solve my problem. Thank you :))

frommy point of view on these pictures solution is converged

to increase accuracy for your case you may run simulation in transient