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Smagorinsky channel flow pressure residual

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Old   October 24, 2016, 19:50
Default Smagorinsky channel flow pressure residual
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Zuoxian Hou
Join Date: Oct 2016
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Hi everyone!
I am a newbie in OF and meet some problems now.
I'm using Smagorinsky model to run a simulation of channel flow which Re_tau=550.
It seems that my pressure residual diverged,is that right?
I followed the toturial of Re_tau=395 and just change the Reynolds number.
I think its my fvsolution have some problems.

solvers
{

p
{
solver GAMG;
smoother DICGaussSeidel;
agglomerator faceAreaPair;
nCellsInCoarsestLevel 100;
preconditioner DIC;
mergeLevels 1;
tolerance 1e-08;
relTol 0;
}

pFinal
{
solver GAMG;
smoother DICGaussSeidel;
agglomerator faceAreaPair;
nCellsInCoarsestLevel 100;
preconditioner DIC;
mergeLevels 1;
tolerance 1e-08;
relTol 0.;
}

U
{
solver PBiCG;
preconditioner DILU;
tolerance 1e-08;
relTol 0;
}
}

PISO
{
nCorrectors 2;
nNonOrthogonalCorrectors 0;
pRefCell 1001;
pRefValue 0;
}

Can anyone give me some advice?I have been trapped here for over a week and don't have any idea.
Thank you very much!
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