how to adjust continuity equation in vof???

Asghari

Hi all;

I am working on condensation modeling using the vof model and i am using SIMPLE algorithm for velocity-pressure solution.

We know according to Fluent6.0 user manual that only volume fraction,momentum and energy equations must be solved in vof model but for a cfd solution we need to solve continuity equation specially in velocity-pressure couple algorithms like simple algorithm:

I have a question about this model:

"How can we adjust continuity equation in mixture phase in Fluent software? "

Thanks in advance for your responses.