CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

rhoCentralFoam noIterations Exceeded

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 29, 2016, 11:06
Default rhoCentralFoam noIterations Exceeded
  #1
New Member
 
Henry
Join Date: May 2016
Posts: 15
Rep Power: 6
hbrist7 is on a distinguished road
Hi all,

I'm working on solving a case in rhoCentralFoam and keep getting a "Maximum number of iterations exceeded" error after a handful of iterations. I used snappyHexMesh to generate the mesh, and am running the case in parallel. I'm new to openfoam and cant really make much of the error, or where the source of the error is located. I've attached the log file with the error below. Any help would be appreciated!

log.rhoCentralFoam - noIterationsExceeded.docx

Thanks,

Henry
hbrist7 is offline   Reply With Quote

Old   July 11, 2016, 12:18
Default
  #2
New Member
 
Matthew Shorter
Join Date: Feb 2016
Posts: 10
Rep Power: 6
matthewshorter is on a distinguished road
Basically, you blew up the thermo solver (the iterations to solve for thermodynamic parameters could not converge accurate solution due to poor input) . This is most likely directly due to negative temperature and/or pressure. Try running the case in serial if you can or printing out every timestep to see where error occurs. The problem is likely in your mesh or boundary conditions.
matthewshorter is offline   Reply With Quote

Old   July 11, 2016, 12:39
Default Solved
  #3
New Member
 
Henry
Join Date: May 2016
Posts: 15
Rep Power: 6
hbrist7 is on a distinguished road
Thanks for the advice - I recently found the error: I was stupid and put cp in units of kJ/Kg K instead of J/kg K, and that being off by a factor of 1000 is what blew up the case.
hbrist7 is offline   Reply With Quote

Reply

Tags
help needed, iteration error, iterations exceeded, parallel compressible, rhocentralfoam

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
How to apply a turbulence model to the rhoCentralFoam solver? arussell92 OpenFOAM Pre-Processing 16 December 19, 2020 09:12
Modify rhoCentralFoam: other equations of state fivos OpenFOAM Programming & Development 5 July 29, 2020 14:17
sonicFoam Wedge, Max. Iterations Exceeded, hConstThermo, v199ah OpenFOAM Running, Solving & CFD 4 March 15, 2016 10:39
Diverging solution in transonicMRFDyMFoam tsalter OpenFOAM Running, Solving & CFD 30 July 7, 2014 07:20
compressible flow in turbocharger riesotto OpenFOAM 50 May 26, 2014 02:47


All times are GMT -4. The time now is 18:30.