quick divergence in air-water multihpase system?
 

I am modeling an air-water system using Eulerian multiphase model, and the air is primary phase and water is secondary phase. But my calculation diverges very quickly. I can only run it if I decrease the water droplet size below 200 microns and increase the density of air dramatially (at least 5 times). There is a pretty strong swirling flow in my geometry and my mesh quality is good.

Does anybody have similar experience with this? What's the reason for that?

Thanks!

anybody can answer me? thanks.