[iraf]

Hi all,

i'm setting a multiphase transient simulation of a tube with steam at inlet at 450 K and fixed wall temperature (300 K) in order tu capture wall condensation. Facing with Lee model (the only one available in Fluent) i found that results depends on parameters (evaporation and condensation frequencies) that has to be tuned.
I've tried to slightly increase these values to see result sensitivity but simulation has started to diverge, so a tuning would be impossible.
Any suggestion about how to overcome convergence issues?

Thank you in advance