Assign flowrate

A boundary that prescribes the flow into or out of the network at a node — a pump feeding a fixed rate, a metered supply, or an end-of-line draw.

• You know the flow at a point but not the pressure.
• End-of-line consumers (this is the safe way to keep a degree-1 draw).
• Relief-source flows in a flare-header rating.

Enters continuity as a fixed source/sink term; the solver finds the pressure that the network needs to pass that flow.