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Search: Posts Made By: fs82
Forum: OpenFOAM February 16, 2011, 05:32
Replies: 121
Views: 34,945
Posted By fs82
This is easy to answer. Please have a look to...

This is easy to answer. Please have a look to dynSmagorinsky.C:
void dynSmagorinsky::updateSubGridScaleFields(const volSymmTensorField& D)
{
nuSgs_ = cD(D)*sqr(delta())*sqrt(magSqr(D));
...
Forum: OpenFOAM March 17, 2010, 03:25
Replies: 121
Views: 34,945
Posted By fs82
Yeah nice discussion and I have learned something...

Yeah nice discussion and I have learned something :-D
Forum: OpenFOAM March 15, 2010, 13:05
Replies: 121
Views: 34,945
Posted By fs82
Allright, I had a deeper look into my literature...

Allright, I had a deeper look into my literature and I agree with you. A dynamic model allways needs no wall damping. It adjust the constant in a way that the influence of the model is reduced near a...
Forum: OpenFOAM March 15, 2010, 12:47
Replies: 121
Views: 34,945
Posted By fs82
Allright, I do not have the time at the moment to...

Allright, I do not have the time at the moment to deal with this in detail. But the article refer to a dynamic Smagorinsky? Smarorinsky uses the assumption of isotropic turbulence which isn't...
Forum: OpenFOAM March 15, 2010, 06:20
Replies: 121
Views: 34,945
Posted By fs82
Hello Jiang Guoyi, just a short comment to: ...

Hello Jiang Guoyi,

just a short comment to:



The idea of a dynamic Smagorinsky model is not to get rid of a wall damping, but to get rid of the Smagorinsky constant. Because this constant...
Forum: OpenFOAM March 11, 2010, 06:36
Replies: 121
Views: 34,945
Posted By fs82
Did you check where your simulation blows up? My...

Did you check where your simulation blows up? My experience is, that the scheme influences your solution but do not blow up the whole simulation. May be your boundary condition isn't set correctly or...
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