pimpleFoam strange results

misklach · April 23, 2014, 14:11

hello everyone,
I'm solving the laminar flow around a flat plate at 4deg angle of attack with pimpleFoam. I got strange results, do you know where they might come from?

case 102
nOuterCorrectors 3
nCorrectors 2
nNonOrthogonalCorrectors 2
Courant max = 0.5

case 104
nOuterCorrectors 6
nCorrectors 2
nNonOrthogonalCorrectors 2
Courant max = 10

case 106
nOuterCorrectors 6
nCorrectors 2
nNonOrthogonalCorrectors 2
Courant max = 5

The case 104, seems to be better than 102, because I added more nOuterCorrectors (but a very high Co)
But in case 106, with the same correctors and half Co, again the flow field is totally weird...

Any hint?

jherb · April 24, 2014, 17:59

Try much larger nOuterCorrectors and add residual control, see e.g. https://github.com/OpenFOAM/OpenFOAM...tem/fvSolution
(this is the only example in the tutorials using it, so don't care about the different solver rhoPimpleFoam)

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April 24, 2014, 17:59		#2
jherb Senior Member Joachim Herb Join Date: Sep 2010 Posts: 650 Rep Power: 21	Try much larger nOuterCorrectors and add residual control, see e.g. https://github.com/OpenFOAM/OpenFOAM...tem/fvSolution (this is the only example in the tutorials using it, so don't care about the different solver rhoPimpleFoam)