Flow splitting at Comsol 6.2 Version

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Hello Everyone,

I have a COMSOL Multiphysics geometry as shown in the figure below. The model consists of a main pipe with an inlet at the upstream end and an outlet at the downstream end.

The inlet flow rate is set to 40 L/h. At the first junction, where a U-shaped branch begins, I would like to split the flow such that half of the inlet flow rate is diverted into the U-shaped pipe (20 L/h).

Could you please advise how this flow split can be defined or enforced in COMSOL?

An image of the complete setup is also attached.



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