CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLUENT

Custom Drag, floating point error: invalid number

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

Reply
 
LinkBack Thread Tools Display Modes
Old   October 2, 2007, 07:51
Default Custom Drag, floating point error: invalid number
  #1
JK
Guest
 
Posts: n/a
Hi.. I want to fit a custom drag law in simple gas-liquid pipe flow. As an exercise I coded the standard Morsi-Alexander drag Law through a UDF and enabled the drag through UDF. Now, the solver runs for some time and then gives Floating Point Error: Invalid Number. If I lower the underrelaxation, then it runs for a relatively longer time but gives the same error finally.

how to correct this plz help thanx in advance

PS: should I post the UDF I wrote ??
  Reply With Quote

Reply

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
Floating point error-invalid number Huong Main CFD Forum 12 July 30, 2014 07:42
Error: Floating point error: invalid number fpingqian FLUENT 4 February 8, 2012 02:20
HELP:error :Floating point error: invalid number when i drag coefficient udf was used zoesjtuer FLUENT 1 September 3, 2010 02:17
BlockMeshmergePatchPairs hjasak OpenFOAM Native Meshers: blockMesh 11 August 15, 2008 07:36
Inviscid Drag at subsonic, subcritical Mach # Axel Rohde Main CFD Forum 1 November 19, 2001 13:19


All times are GMT -4. The time now is 00:45.