[hvem10]

Dear All,

I need to model a kind of an air intake system. I have a common duct where the air is sucked from ambient and at the other end is the duct divided into two smaller ducts. In the two smaller ducts there is a suction fan installed in each duct. A system like a “Y”
I know the desired mass flow through the system. What kind of boundaries should I use, especially for the outlet (where the fans are).
Would it be correct to use an inlet vent, where the air is sucked from ambient
Exhaust fan at the outlet of the two small ducts and then use a constant pressure jump. And adjusting the pressure jump until the desired mass flow is obtained.
The duct is not a symmetric “Y” so I would expect an uneven mass flow in the two “legs”, can I predict that if I use the pressure jump at the outlet

Thanks in advance
S