[tejasvikrishna]

I am trying to model blood flow in a bifurcation, I have pulsatile pressure at inlet and pulsaitile mass flow rates at the outlets. As there is no mass flow rate outlet in fluent, I have been trying to give negative values for a mass flow rate inlet bc at the outlets using UDFs. However the results seem to be all wrong ,I see only negative flow at the outlets.
Can you tell me what is the issue and what can be done.
Thanking you
Tejasvi