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Forum: Main CFD Forum

April 10, 2012, 08:40

Replies: 39

Lambda-2 criterion

Views: 42,968

Posted By FMDenaro

yes, someway once identified (and marked) a...

yes, someway once identified (and marked) a vortex, you should follow in its evolution for a period of time greater than the turnover time, assessing if it is coherent or disappears ...
A...

Forum: Main CFD Forum

April 10, 2012, 08:22

Replies: 39

Lambda-2 criterion

Views: 42,968

Posted By FMDenaro

The definition of what is a "coherent structure"...

The definition of what is a "coherent structure" is quite vague ...but it is somehow related to that fact that the life of a vortical structure must be at least greater than the characteristic...

Forum: Main CFD Forum

April 10, 2012, 06:39

Replies: 39

Lambda-2 criterion

Views: 42,968

Posted By FMDenaro

Hi, Paolo wrote a complete explanation, I just...

Hi,
Paolo wrote a complete explanation, I just add that the relevant paper for the lambda-2 criterion is :
http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=353418
...

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