[Tarantino]

Hello all!

In a UDF, I need to return the volume flow rate on a pressure outlet boundary. How can I do so? Is there any macro for this?

In addition, I want to return the pressure outlet which was assigned to that boundary.
I want to know how this can be done? Is there any macro for this?

Thanks.

[AlexanderZ]

Originally Posted by Tarantino

Hello all!

In a UDF, I need to return the volume flow rate on a pressure outlet boundary. How can I do so? Is there any macro for this?

In addition, I want to return the pressure outlet which was assigned to that boundary.
I want to know how this can be done? Is there any macro for this?

Thanks.

Hello

Answers to these questions can be found in fluent tutorials. See ANSYS Fluent Tutorial Guide
However,
monitor for volume flow rate:
In fluent GUI go to solution -> Monitors -> Surface Monitors -> create ->
you may plot (to window) and/or write (to file) on each iterations (for stedy-state) or each timestep (transient) -> under Report Type choose Volume flow rate -> select outflow under Surfaces list -> OK


monitors for pressure:

all the same, but under Report Type choose Area-Weight Average-> Field Variable is Pressure -> Static Pressure -> select outflow under Surfaces list -> OK

Read manual
Best regards

[Tarantino]

Hi AlexanderZ,

I think you didn't read my question or you misunderstood!
I want to return volume flow rate and assigned pressure on a pressure outlet boundary in a UDF not in TUI!!

[AlexanderZ]

Hello

I missed your point about UDF.

Read ANSYS Fluent Customization Manual
3.2.4.4. Flow Variable Macros at Interior and Boundary Faces

F_P(f,t) built in macros for Pressure on boundary
F_FLUX(f,t) built in macros for mass flow rate on boundary

Try to search tutorials with these functions

Best regards