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-   -   Variable names for mass flux for a recirculating-outlet boundary condition (http://www.cfd-online.com/Forums/fluent-udf/72373-variable-names-mass-flux-recirculating-outlet-boundary-condition.html)

BRNN February 3, 2010 12:25

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.

PaulK July 8, 2010 17:45

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.

PaulK July 12, 2010 12:33

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.

xiaokang November 16, 2011 01:47

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!

Mahmoud said November 13, 2015 19:03

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

Mahmoud said November 15, 2015 10:31

Quote:

Originally Posted by PaulK (Post 266935)
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.



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?


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