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

DPM residuals for sampler

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 10, 2007, 11:56
Default DPM residuals for sampler
  #1
Don Parsons
Guest
 
Posts: n/a
First of all thank you all for your help. I have asked so many questions and as of yet have not fealt confident enough to give any advice.

Now for my new questions if you all will be som kind as to offer a little more help. I am simulating a cyclone sampler. I have allowed the continuous phase to converge to e-6 (we are still in the preliminary stages). The flow is assumed to be steady state for now. I then set the DPM for steady state particle tracks. I have enabled interaction with the continuous phase and said update source terms every iteration. I am doing 1 DPM iteration per 40 continuous phase iterations. Also I am doing a surface injection.

My first question is does the above procedure seem reasonable? My second question is how do I know when the particle tracks are converged? Once I start my iterations with the DPM on the residuals jump up and oscilate about 7e-4 with amplitude of about half an order of magnitude. Will these residuals ever come down or does the converged solution have oscilating residuals.

Thanks for the help in advance.
  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
Tutorial of how to plot residuals ! wolle1982 OpenFOAM Running, Solving & CFD 112 June 3, 2015 07:50
what to monitor besides residuals? franzdrs FLUENT 5 March 21, 2013 04:59
DPM modeling Mohsin FLUENT 0 March 31, 2010 22:11
Oscillation of residuals in DPM (Ergent need!) yooceframandi FLUENT 1 February 28, 2006 07:46
Convergence - scaled vs unscaled residuals HS FLUENT 1 November 7, 2005 06:45


All times are GMT -4. The time now is 02:36.