CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Heat flux UDF problem

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

LinkBack Thread Tools Display Modes
Old   September 10, 2003, 23:05
Default Heat flux UDF problem
Posts: n/a

I have a 3D domain...which is bascially a partial clyinder cut at along the axis. I am trying to write a UDF for the heat profile over the top and bottom surface.The heat flux equations for the 2 surfaces are related to each other and are obtained by solving a set of non linear equations...for which i have written a newton raphson function. I call this function in the two F_profile macros for the heat fluxs....i interpret the udf...however on assigning it as the boundary condition gives me a Fatal error

The problem exists due to calling newton function in the macros...

If anybody has any clue on that....please help.

  Reply With Quote

Old   September 11, 2003, 06:13
Default Re: Heat flux UDF problem
Posts: n/a
Hi Manan,

I have had similar problems when trying to assign certain UDFs. The problem occured for me when i assigned it to an interior zone. I changed it to a wall (coupled wall) and the problem didnt recurr

Good Luck

  Reply With Quote


Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
UDF for wall heat flux ? Seyoung Oh FLUENT 4 December 3, 2014 14:17
Heat flux in ansys cfx juliom OpenFOAM Running, Solving & CFD 2 April 14, 2009 14:30
Customize Heat Flux Distribution Using UDF Ken Adams FLUENT 0 May 25, 2007 15:25
UDF for time dependent heat flux Rameshwar Ajja FLUENT 0 February 16, 2006 01:26
monitoring dynamic heat flux through a surface abdnakhi FLUENT 0 August 15, 2005 09:57

All times are GMT -4. The time now is 19:27.