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

Unsteady DPM

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 12, 2003, 20:36
Default Unsteady DPM
  #1
Alex Munoz
Guest
 
Posts: n/a
Hi CFD USERS

I have to run DPM model under unsteady state conditions. I need to determine the number of time steps that I should request. Currently, I set a time step size of 0.01s with 25 iterations per time steps, and I get very good convergence of the continuous flow field.

Preliminary estimations lead to 250 time steps (path length 5m, particle velocity 2.0m/s, thereby a particle would cross the domain in 2.5s). Unfortunately, this number of iterations demands more than 33 hours. and I need to run more than eight times the DPM model.

As a result, I wonder if my estimations are right, and if could be another way to run particle tacking without requesting iterations of the continuous phase.

Thank you in advance

Alex Munoz
  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
Itīs possible to use this in unsteady dpm tracking? JSoares Fluent UDF and Scheme Programming 3 June 9, 2011 10:41
steady or unsteady DPM ??? Marina FLUENT 5 July 5, 2006 04:52
Unsteady DPM Johnny FLUENT 1 February 22, 2006 13:43
unsteady DPM Thiyagarajan FLUENT 4 August 23, 2005 14:06
steady or unsteady? (in dpm) winnie FLUENT 1 April 28, 2003 11:30


All times are GMT -4. The time now is 22:46.