 |
 |
 |
|
|
|
[Sponsors] | ||||
June 17, 2014, 08:14
|
Residual fluctuation patterns
|
#1 |
|
New Member
Nick Prendergast
Join Date: Dec 2013
Posts: 28
Rep Power: 12  |
Hey everyone.
I'm modelling a 2d aerofoil in air and I had convergence (~2500 iterations) when using a courser mesh so I refined the mesh to check for mesh independence. Now however the residuals seem to fluctuating in a pattern and the solution is not converging by 10000 iterations. Can anyone tell me how this could be happening and what I can do to fix it? Thanks Nick |
|
|
|
|
|
June 19, 2014, 04:03
|
|
#2 |
|
New Member
Nick Prendergast
Join Date: Dec 2013
Posts: 28
Rep Power: 12 |
I have since found out this numerical noise with both high and low frequency oscillations and solved the problem by turning on the SA turbulence model.
Nick |
|
|
|
|
|
 |
| Tags |
| residuals fluent |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| simpleFoam error - "Floating point exception" | mbcx4jc2 | OpenFOAM Running, Solving & CFD | 12 | August 4, 2015 02:20 |
| Unstabil Simulation with chtMultiRegionFoam | mbay101 | OpenFOAM Running, Solving & CFD | 13 | December 28, 2013 13:12 |
| pimpleFoam: turbulence->correct(); is not executed when using residualControl | hfs | OpenFOAM Running, Solving & CFD | 3 | October 29, 2013 08:35 |
| 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 |
Linear Mode
