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Forum: Main CFD Forum

January 15, 2014, 04:42

Replies: 5

the Reynolds average of RANS and the filter function of LES

Views: 1,822

Posted By FMDenaro

for any type of method, FD, FV, SM, etc, the...

for any type of method, FD, FV, SM, etc, the computational grid size introduce the cut-off filter at the Nyquist frequency Pi/h. All the scales smaller than h are filtered by the grid.
But there is...

Forum: Main CFD Forum

January 15, 2014, 04:08

Replies: 5

the Reynolds average of RANS and the filter function of LES

Views: 1,822

Posted By FMDenaro

Hello, your observation is correct, the answer...

Hello,
your observation is correct, the answer is that you are right, no average in RANS and no filter in LES codes generally are present in subroutines.

The key is that the original NS equations...

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