Reply To: RPI Model Diverges at high superheats

[Rob]

Mesh - good. I see far too many high aspect ratio cells as everyone takes the y+ bit of their CFD training far too seriously and never considers the resulting cell shape. 

Drop the Time Scale Factor. I suspect "something" ie boiling is occurring too quickly and that's causing problems for the solver. Whilst the RPI models are designed for steady state, the resulting multiphase flow is often very transient.