Inlet Boundary

A fundamental component of any solvable model, represented as a boundary node that provides fluid and temperature data for the solver.

Inlet boundaries are not manually assigned but automatically determined based on the node’s configuration to drive flow toward the system.

Some of these configurations are:

• When two Known pressure nodes at the same elevation are connected to each other, and one node has a higher pressure setting, the solver automatically selects the node with the higher pressure as the inlet boundary component.
• For boundary nodes both specified with the same pressure setting, the relative elevation between them also serves as a basis for selection.
• When using a known flow node, setting the flow direction to “Into Network” instructs the solver to treat that node as an inlet boundary. This forces the solver to calculate a boundary pressure that establishes the node as the fluid source.
• If a boundary node is connected to the suction side of a booster or flow control valve, it will also require the solver to use its data as inlet boundary.