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

UDF diffusivity: problem with contour

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

LinkBack Thread Tools Search this Thread Display Modes
Old   August 4, 2014, 03:28
Default UDF diffusivity: problem with contour
Senior Member
Join Date: Feb 2011
Posts: 140
Rep Power: 14
Lilly is on a distinguished road
Dear all,

I didn't get any reply in the Fluent forum, but maybe somebody in the UDF forum has an idea about this problem:
I have got a problem with the contour of the result of the mass diffusivity of my species, which I calculated using the strain rate. I also use the strain rate to calculate the viscosity of my fluid via a udf and have no problems showing this for several planes using "contour plot".
For any reason, if I load a data file and try to plot the mass diffusivity in a plane it only shows me a constant value (for each plane the same), which ist the constant part of my diffusivity equation (see pic), but not the part which ist calculated using the strain rate. But if I record "monitor data" in the single planes, a value changing with the strain-rate can be seen.
If I make fluent calculate one more iteration, I receive a correct contour plot including the "strain-rate-part" (see pic). However, if I save this case&data now and reopen it, the proper contour-plot is gone again and only the constant value is shown.
Does anybody have any idea how to solve this problem?
I am really thankful for any idea, since I don't have a clue!
Attached Images
File Type: jpg Diffusivity_correct.jpg (35.0 KB, 10 views)
File Type: jpg Diffusivity_wrong.jpg (39.5 KB, 9 views)
Lilly 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
ATTN ALL: SOLUTON TO UDF COMPILE PROBLEM Rizwan Fluent UDF and Scheme Programming 40 March 18, 2018 06:05
UDF Compilation Error - Loading Library - COMMON Problem! Help! robtheslob Fluent UDF and Scheme Programming 8 July 24, 2015 00:53
Kinematic Diffusivity - Problem with additional variable clau90 CFX 3 May 14, 2014 09:54
Contour Problem in Interface Boundary inra FLUENT 1 May 29, 2010 05:22
UDF variables F1, y / problem with UDF Fabian FLUENT 6 June 2, 2003 10:22

All times are GMT -4. The time now is 04:58.