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September 17, 2010, 09:47
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definition norm of strain rate
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#1 |
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Member
Matthias Walter
Join Date: Mar 2009
Location: Rostock, Germany
Posts: 63
Rep Power: 17  |
Hi,
the norm of the strain rate tensor is defined as mag(S) = sqrt( 2 * S_ij S_ij ) where S_ij = 1/2 ((grad(U)+grad(U)^T) = symm(grad(U)). OF defines mag(S) = sqrt(S_ij S_ij) , both expressions differ in the factor of sqrt(2). However, it could be important for the determination of tau_ij in the turbulence models(i.e. Smagorinsky)! Is it a possible bug? best regards Matthias |
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September 17, 2010, 10:07
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#2 |
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Senior Member
Mattijs Janssens
Join Date: Mar 2009
Posts: 1,419
Rep Power: 26 |
We've finally got a proper bug reporting system :-)
Please report any OpenFOAM bugs on http://www.openfoam.com/bugs. Thanks, Mattijs |
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