CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

Does the Case Termination Control based on coefficient convergence work?

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

LinkBack Thread Tools Search this Thread Display Modes
Old   May 1, 2017, 04:27
Unhappy Does the Case Termination Control based on coefficient convergence work?
New Member
Ronith Stanly
Join Date: Mar 2017
Location: Sweden
Posts: 24
Rep Power: 8
ronithstanly is on a distinguished road
I tried the new runTimeControl feature ( ) using the convergence of lift, drag and moment coefficients for the simpleFoam simulation of flow around an airfoil that I did. But even though I tried with different averaging window values (ranging from 1 to 1000 for a solution that calculated more than 1e05 timesteps) and tolerances (even 0.1), eventhough I could see that the coefficients did not oscillate more than 1% for more than the last 10% of the timesteps, the solution did not seem to stop there. I thought that the convergence criterion under SIMPLE based on the residuals of p, U and nut were causing the problem, so I tried commenting that and also tried reducing it, but in either case, the coefficient based control did not seem to stop the solution.

Has someone successfully used this feature to terminate their solution based on the convergence of coefficients?
Am I making some fundamental error in defining the feature?
What should I look out for while setting this control feature?

Any guidance for using this utility will be really helpful.

Thanks in advance,
Ronith Stanly.
ronithstanly is offline   Reply With Quote


coefficient of lift, convergence criterion, run-time, solution control

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
Error - Solar absorber - Solar Thermal Radiation MichaelK CFX 12 September 1, 2016 05:15
Simple piston movement in cylinder- fluid models arun1994 CFX 4 July 8, 2016 02:54
Is Playstation 3 cluster suitable for CFD work hsieh OpenFOAM 9 August 16, 2015 14:53
How to control the convergence? titio OpenFOAM Running, Solving & CFD 4 September 21, 2011 11:29
Automotive test case vinz OpenFOAM Running, Solving & CFD 98 October 27, 2008 08:43

All times are GMT -4. The time now is 06:49.