What Viscous Model for a pressure variation to the inlet of a duct?
 

Hello,

I want to study the flow of air in a rectangular duct with pressure variation of tornado (-2600 Pa) for inlet and P atm for the outlet. So I would like to know what is the best viscous model?
I think It would be the K-omega model SST because it's adapted for a large pressure gradient. But I am not sure. Any help would be great. Thanks !

Finally, it would be K-Epsilon realizable the best model.