Setting Inlet pressure boundary condition with UDF

[samsonwilliams]

Good morning,

I'd like to impose an inlet pressure instead of an inlet flow. I understand that it is required to use a subroutine but I don't know how to do it. So far I just learned to use the GUI.

Even though the analisys could be less stable, it would suite directly my problem and experimental conditions.

Of course, I'll impose also an outlet pressure, easily using the GUI as already implemented.

Can you guide me in arranging this inlet pressure boundary condition subroutine?

Thank you.