[P_VS]

Hello! I am trying to simulate in FLUENT a boiling flux through a vertical channel, but it keeps giving the next message:

# Divergence detected in AMG solver: vof-1 -> Increasing relaxation sweeps!
# You may try the enhanced divergence recovery with (rpsetvar 'amg/protective-enhanced? #t)

turbulent viscosity limited to viscosity ratio of 1.000000e+05 in 101698 cells

reversed flow in 88 faces on pressure-outlet 6.

Divergence detected in AMG solver: vof-1
Divergence detected in AMG solver: vof-1
Divergence detected in AMG solver: vof-1
Error at host: floating point exception

Error at Node 0: floating point exception

Error at Node 1: floating point exception

Error at Node 2: floating point exception

Error: floating point exception
Error Object: #f


My BCs are: velocity inlet (with a defined profile), pressure outlet and Wall (temperature). Temperature of vapor is fixed to saturation temperature.

I have tried both SIMPLE and COUPLE methods, and tried reducing the under relaxation factors. Still, divergence is detected after a few iterations.

Could it be due to the choice of phase interaction methods? I don't know what else I can try.

Any advice will be apreciated.