Variable names for mass flux for a recirculating-outlet boundary condition
 

Hello,
I want to use the recirculating-inlet/recirculating-outlet boundary condition with Fluent 12. It works fine, however, I need to be able to modify the mass flux such that it is a function of the inlet average temperature of the face. In doing so I can use the define_profile function, I just need to know the variable name used in fluent so I can return it. Please help if you can!
Thanks.

Recirculation UDF
 

Hi,

Does anyone have a recirculation Fluent UDF written they can share? I know this is openly available in Icepak (just by canceling a solve and checking the two recirculation boundary conditions).

Please post in this thread if you have it.

Thanks.

Enter following commands in TUI:
(rpsetvar 'icepak? #t)
(models-changed)

Two boundary conditions are added:
Recirculation-Outlet and Recirculation-Inlet

The alternative of writing the UDF uses DEFINE_ADJUST and you can read about this in the Fluent User Manual.

how to extract the value of last time step?
 

I am try to solve a recirculation prolem, that is like: a domain has a particle inlet. the particle flux is unknown. I want to use the particle flux of outlet at the last timestep. So does anybody know how to extract the certain value of the last time step?
thanks!

Dear Sir
How can you activate the recirculation inlet and outlet in fluent program.
I am trying to use this command but it doesn't work, and give me invalid command.

Best regards

Dear sir
I have read your post (Recirculation Boundary Conditions in ANSYS FLUENT)
You said "to turn on the recirculation inlet and outlet boundary conditions in fluent you need to enter this command"(rpsetvar 'icepak? #t)
(models-changed)
I have entered this command in TUI
but give me this massage
Invalid command
Can you help me to do it in a correct way?

Can'd do recirculation boundary condition
 

I am also looking for the recirculation boundary condition. These commands are (rpsetvar 'icepak? #t)
(models-changed)
not working in my fluent in workbench 15.0. Can anybody help me?

I am also interested in solving the same problem. How to write the UDF that enables the change of the mass flux on the recirculation boundaries with inlet average temperature? Please let me know if there is any clarification needed. Thank you.