CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Random Perturbations

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

LinkBack Thread Tools Display Modes
Old   November 10, 2004, 18:48
Default Random Perturbations
Posts: n/a
Hi all,

Does anyone know how to add random perturbations/fluctuations to a fluid domain? I've tried using the rand() function in a UDF with no success. I'm trying to do this in order to start a LES simulation from a converged k-e solution.

Thanks in advance,

  Reply With Quote

Old   December 4, 2004, 10:15
Default Re: Random Perturbations
Posts: n/a
If you can wait a bit more, FLUENT 6.2 has a simple built-in TUI command that superimpose quasi-random velocity components on top of the mean velocity field, based on the k-epsilon fields.
  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
Fluent UDF - Random Noise Tanner FLUENT 2 May 29, 2014 03:27
Random point inside the mesh filipe OpenFOAM Programming & Development 0 October 16, 2009 11:24
Changing area with a random value of pressureinlet M-Ray FLUENT 0 May 16, 2008 02:48
Recognizing a random signal cfd_newbie FLUENT 3 January 10, 2008 18:26
Could Fluent simulate random process? David FLUENT 0 September 6, 2002 10:49

All times are GMT -4. The time now is 03:50.