Reply To: Suddenly divergence in transient simulation with VOF

[Dato]

Constant temperature is applied at heat-wall as shown. The others wall is adiabatic. Heat is mainly removed by heat conduction and partial heat would be used to heat water-vapor at upper tank because flow of water is drived by density change. But there is no way that vapor temperature is higher than water in the tank. 

for mesh, all radial division is 5 and axially strench with maximum aspect ratio is 8. Maybe radial mesh need to be increase slightly. But it would  lead to large amount of mesh. 

I'm wondering whether I need to expand numeric outlet region to avolid adverse flow in physical outlet. But it would also increase mesh number.