[spalartallmaras]

Hi,

I try to simulate the phase change of AdBlue from solid to liquid, but it is really hard to finish it.

There is a cylinder with 10 L and at the bottom of cylinder there is a heating mat with 60 W. In cylinder there is 4.5 L of frozen Adblue with -16 grad Celsius.

I turned on of cource VOF.

My question is,

1. Should be 3 phases-simulation(frozen Adblue, liquid Adblue, Air) or 2 phases-simulation(Adblue and Air)?

2. If I use 2 phases-simulation, how can I set the density of frozen Adblue and liquid adblue seperately? The Problem is, the density of frozen adblue has a constant value which is not depend on temperature and the density of liquid adblue is depend on temperature.

3. I also try to use 2 phases-simulation with Murnaghan equation of state for density. In this case the density of (frozen and liquid) Adblue is a value which has only a variable pressure. Should I use then UDF for the density?

Thank you very much!