Setting Boundary Conditions and Values

The only boundary conditions that need changing are the inlet velocity magnitudes, which are to be specified using the field functions created in section Creating Field Functions. To set the inner inlet boundary condition:

Select the Regions > Fluid > Boundaries > Inner_inlet > Physics Values > Velocity Magnitude node.

In the Properties window, change the Method property to Field Function.

Select the Velocity Magnitude > Field Function node.

In the Properties window, choose Inner Inlet Velocity for the Scalar Function property.

Open the Boundaries > Outer_inlet node and then, following the same procedure as described above, specify that the velocity magnitude at the outer inlet is to be defined by the Outer Inlet Velocity field function.

Save the simulation.