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Forum: Main CFD Forum

July 31, 2013, 13:30

Replies: 34

Dynamic Smagorinsky model- Filtering Concept

Views: 6,143

Posted By CFDJosh

You shouldn't be reusing your grid filter as a...

You shouldn't be reusing your grid filter as a test filter if what you want to do is Germano, regardless of what kind of filter you're using.

The dynamic model is built on the assumption that the...

Forum: Main CFD Forum

July 31, 2013, 11:34

Replies: 34

Dynamic Smagorinsky model- Filtering Concept

Views: 6,143

Posted By CFDJosh

Yes, the LES equation is independent of...

Yes, the LES equation is independent of filtering, but interpretation of what filtering actually means is absolutely dependent on what filter you actually use. If you want to talk about scales, e.g....

Forum: Main CFD Forum

July 30, 2013, 16:48

Replies: 34

Dynamic Smagorinsky model- Filtering Concept

Views: 6,143

Posted By CFDJosh

Very briefly - Look at the transfer function of...

Very briefly - Look at the transfer function of your filter. Any method you implement, you want a filter with a monotonically decreasing transfer function with F(k_max) = 0 9, where F(k) is the...

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