The Inlet node adds a boundary condition for the inflow (or outflow) perpendicular (normal) to the boundary:
where U0 is a specified value or expression for the inward (or outward) Darcy’s velocity. A positive value of the velocity
U0 corresponds to flow into the model domain whereas a negative value represents an outflow.
Enter a value or expression for the Normal inflow velocity U0 (SI unit: m/s). A positive value of
U0 represents an inflow velocity, whereas a negative value represents an outward velocity.
Enter a value or expression for the Saturation fluid 1 s1 (a dimensionless number between 0 and 1). The default value is 0.