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

SimpleFoam: Residual convergence problem

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 24, 2018, 18:50
Default SimpleFoam: Residual convergence problem
  #1
New Member
 
Hungary (Ungarn)
Join Date: Sep 2017
Posts: 16
Rep Power: 8
miha23 is on a distinguished road
Dear Foamers,

I am trying to simulate a wind around a building (e.g. cube) using simplefoam solver, realizablekE model and cyclic BCs. The flow is powered by a constant source hardcoded in the solver. But my residuals show some convergence problems.
First it is having constant oscillation.
And second it is having a bump after a point.
I linked a plots below.

Does anyone have any ideas what could cause these?

Thank in advance.
Attached Images
File Type: png Screenshot from 2018-04-25 00-47-00.png (56.3 KB, 36 views)
miha23 is offline   Reply With Quote

Reply


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
a problem with convergence in buoyantSimpleFoam skuznet OpenFOAM Running, Solving & CFD 6 November 15, 2017 12:12
settlingFoam unstable? bendel_boy OpenFOAM Running, Solving & CFD 38 July 8, 2016 05:07
Extrusion with OpenFoam problem No. Iterations 0 Lord Kelvin OpenFOAM Running, Solving & CFD 8 March 28, 2016 11:08
Cannot run the code properly: very large time step continuity error crst15 OpenFOAM Running, Solving & CFD 9 December 14, 2014 18:17
Upgraded from Karmic Koala 9.10 to Lucid Lynx10.04.3 bookie56 OpenFOAM Installation 8 August 13, 2011 04:03


All times are GMT -4. The time now is 23:41.