Pressure build-up with VOF in a closed domain
 

Dear all,

I have problems trying to reproduce in FLUENT a pressure build-up phenomena due to external heat flux applied on the walls of a closed domain with two phases (liquid and gas)inside.

The procedure recommented in FLUENT is the Floating Operating Pressure option. This works for a no-multiphase model and the solution is quite closed to the thermodinamic theory. But it doesn't for the multiphase: the pressurization rate is 50% more than expected.

Did anybody face before this kind of problem? Thanks a lot.

Best regards,

Juan