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Forum: OpenFOAM Bugs

March 3, 2009, 19:34

Replies: 8

DyOneEqEddy negative nuSgs

Views: 2,831

Posted By roth

Hi Kumar, dyOneEqEddy uses

Hi Kumar,

dyOneEqEddy uses a localized ck.

Hmmm backscatter. Good point though I'm seeing far too much of it. I wonder if the ck needs some form of limiting or stabilization.
...

Forum: OpenFOAM Bugs

March 3, 2009, 18:43

Replies: 8

DyOneEqEddy negative nuSgs

Views: 2,831

Posted By roth

dyOneEqEddy (and perhaps other

dyOneEqEddy (and perhaps other dynamic models) depends upon a localized ck i.e.

nuSgs = ck(D) * sqrt(k) * delta

I've found that ck(D) can become negative leading to negative nuSgs.

How...

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