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

Oscillating residual in steady-state solver

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 14, 2023, 05:27
Default Oscillating residual in steady-state solver
  #1
Member
 
Song Young Ik
Join Date: Apr 2022
Location: South Korea
Posts: 58
Rep Power: 4
songyi719 is on a distinguished road
I modified drivAerFastback tutorial to increase mesh, and changed car model into more detailed one I have.


It use simpleFoam with k-w sst turbulence model



However, after making this change, residual started to oscillate


residual_graph.png


Residual continues to diverge and return to near zero. I want this residual to constantly decrease and converge to zero so I can get result, but it never does so.



Why would residual oscillate in steady state solver??
songyi719 is offline   Reply With Quote

Reply

Tags
oscillating, steady

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
Fail to converge when solving with a fabricated solution zizhou FLUENT 0 March 22, 2021 06:33
chtMultiRegionSimpleFoam: maximum number of iterations excedeed. Nkl OpenFOAM Running, Solving & CFD 19 October 10, 2019 02:42
Unstabil Simulation with chtMultiRegionFoam mbay101 OpenFOAM Running, Solving & CFD 13 December 28, 2013 13:12
calculation stops after few time steps sivakumar OpenFOAM Running, Solving & CFD 7 March 17, 2013 06:37
Orifice Plate with a fully developed flow - Problems with convergence jonmec OpenFOAM Running, Solving & CFD 3 July 28, 2011 05:24


All times are GMT -4. The time now is 23:21.