[tav98f]

I need to change the type of BC I am using halfway through my simulation. I want to know the best way to do this.

I have considered using multiple configurations but I have some questions about that:
When I specify the total time under analysis type for the configuration after I have changed my BC's is it the total time of both configurations or it that the total time of just the second configuration?
Also when my time dependent expressions are evaluated will the variable t (time) be reset in the second configuration?

It would be nice to be able to do this without multiple configurations if possible. I specifically need to change my inlet with Cartesian velocity components specified to an outlet with Cartesian velocity components specified. I also need to change all of my outlets with specified mass flow rates (one per outlet) to inlets with specified mass flow rates.