CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT > Fluent UDF and Scheme Programming

UDF profile: Fluent method for coupling inlet and outlet

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   May 10, 2014, 10:36
Default UDF profile: Fluent method for coupling inlet and outlet
New Member
Marco Dc
Join Date: Feb 2014
Location: Italy
Posts: 20
Rep Power: 12
I-mech is on a distinguished road
I'm studying fluidflow between a rotating wall and a fixed one.
I have two Inlet and an Outlet as you can see in the attachment.
Inlet 1: it's a velocity inlet.
Inlet 2: it's a pressure inlet.

I expect that Inlet 1 is more or less equal to Oulet 1 in terms of velocity and temperature (this idea is however more realistic than set a constant Temperature and Velocity to the Inlet 1).
I'm trying to set my inlet-velocity with an UDF that stores velocity and temperature from an outlet and use these values to set velocity and temperature at the inlet.

I want that Fluent does the coupling at the start of every solution so it has to simulate first with an inlet boundary condition and, for next iterations, do the coupling until convergence.

Is it possible?

How does Fluent manage the coupling if Inlet area and Outlet area are different?

Any tip is welcome. Thanks in advance for any help.
Attached Images
File Type: jpg udf_boundary.jpg (19.7 KB, 43 views)

Last edited by I-mech; May 10, 2014 at 10:38. Reason: typing errors
I-mech is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
extracting outlet velocity profile from one case to another case's inlet tonggysun OpenFOAM 2 September 13, 2013 04:19
How to apply an outlet velocity profile to another inlet? siw FLUENT 4 April 10, 2013 11:19
p & U outlet bcs for realistic wind inlet profile stevek OpenFOAM 4 July 19, 2010 02:29
what the result is negatif pressure at inlet chong chee nan FLUENT 0 December 29, 2001 05:13
UDF in Fluent to Match Mass Flow at Pressure Outlet Jonas Larsson Main CFD Forum 1 April 29, 1999 10:44

All times are GMT -4. The time now is 22:41.