Boiling with moving boundary
 

Hello there,

I want to simulate liquid boiling in a closed with a moving top wall. I would appreciate any help or suggestions for the following problems I encountered.

1) My mixture model for boiling is showing full evaporation but the pressure inside the container is too small and it seems not increasing? any ideas why? (I have used the mixuture model tutorial with the given UDF).

2) I am not sure how to model the moving top wall due to the liquid evaporating (increase in pressure) or vapor condensing (decrease in pressure) ? any help or materials that might help me to model it. I looked in most of the tutorial couldnot find anything simmilar.

THank you.
Ghaleb Sater
g_Sater@hotmail.com