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Forum: Main CFD Forum

November 12, 2009, 10:42

Replies: 6

Link between eddy viscosity and subgrid-scale turbulent viscosity in LES

Views: 7,753

Posted By sbaffini

That's exactly the point...actually the mixing...

That's exactly the point...actually the mixing length is also used by van Driest in the derivation of the wall damping functions. However this result, as well as the one by Prandtl and von Karman, is...

Forum: Main CFD Forum

November 12, 2009, 06:50

Replies: 6

Link between eddy viscosity and subgrid-scale turbulent viscosity in LES

Views: 7,753

Posted By sbaffini

Well, you should be aware of the fact that the...

Well, you should be aware of the fact that the turbulent viscosity is just a "position", it is not more "real" in RANS/URANS than in LES. The underlying reasoning is, more or less (under specific...

Forum: Main CFD Forum

November 11, 2009, 10:54

Replies: 6

Link between eddy viscosity and subgrid-scale turbulent viscosity in LES

Views: 7,753

Posted By sbaffini

Very roughly speaking, in most of the LES...

Very roughly speaking, in most of the LES applications (which are based on the implicit filtering approach) the classic Smagorinsky model is nothing very different from a 3D mixing length model in...

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