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

Simulation converges too fast when cell count is high

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

LinkBack Thread Tools Search this Thread Display Modes
Old   December 23, 2021, 10:48
Question Simulation converges too fast when cell count is high
New Member
Join Date: Nov 2021
Posts: 1
Rep Power: 0
Ancientkingg is on a distinguished road
I am currently working on a case that uses the simpleFoam solver with the kOmegaSST turbulence model. It involves meshing a car and then running the solver on that mesh. However I seem to notice that when the cell count of the mesh is above a certain level the simulation stops at around timestep 8-10, which I assume is because of convergence. When I lower the cell count in the blockMeshDict and the level of detail in the snappyHexMeshDict the simulation seems to run from start to end.

Would anybody know what could perhaps be the root of this issue?
Ancientkingg is offline   Reply With Quote

Old   December 23, 2021, 11:19
Senior Member
Join Date: Apr 2020
Location: UK
Posts: 449
Rep Power: 11
Tobermory will become famous soon enough
I doubt very much that it is because of convergence, since it has only run 8 - 10 iterations. What was the result of checkMesh? Did it crash or end cleanly? Did it post any error messages during the run?

Can I suggest that you post the log from your run, and maybe your fvSolution file? That way, we can take a peek at what is going on. Cheers.
Tobermory is offline   Reply With Quote


cellcount, mesh, simplefoam

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
[snappyHexMesh] High quality mesh for wind in complex urban environment ziboaa OpenFOAM Meshing & Mesh Conversion 1 January 12, 2021 15:33
Extremely high cell velocities kveki Main CFD Forum 3 April 28, 2020 06:14
Issue in simulation of open channel flow with high viscosity fluid soleymm1 STAR-CCM+ 2 December 3, 2017 01:44
High flow and pressure in peripheral reagion of Hele-Shaw cell David_MicroFluidics OpenFOAM Running, Solving & CFD 1 May 26, 2017 10:04
[Other] High Cell Count but still diverging InterDymFoam gigliagarf OpenFOAM Meshing & Mesh Conversion 0 April 6, 2016 08:01

All times are GMT -4. The time now is 00:44.