Inlet
The Inlet node includes a set of boundary conditions describing the fluid flow condition at an inlet, in the Navier–Stokes limit.
In most cases the inlet boundary conditions appear, some of them slightly modified, in the Outlet type as well. This means that there is nothing in the mathematical formulations to prevent a fluid from leaving the domain through boundaries where the Inlet type is specified.
Inlet
Select a Boundary condition — Velocity (the default), Pressure, Density, or Number density. For each of the following enter a value or expression:
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For Velocity enter a Normal inflow velocity U0 (SI unit: m/s).
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For Pressure enter a Pressure p0 (SI unit: Pa).
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For Density enter a Density ρ0 (SI unit: kg/m3).
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For Number density enter a Number density n0 (SI unit: 1/m3).