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Forum: OpenFOAM Running, Solving & CFD

June 17, 2010, 05:52

Replies: 6

spectrum: LES of a turbulent channel flow finally goes to turbulent

Views: 5,641

Posted By eugene

I really cannot recall how long the sampling ran...

I really cannot recall how long the sampling ran for. It would have to be long enough to capture the lowest frequencies, so somewhere of the order of 1 second simulated time.

What order of...

Forum: OpenFOAM Running, Solving & CFD

June 16, 2010, 08:14

Replies: 6

spectrum: LES of a turbulent channel flow finally goes to turbulent

Views: 5,641

Posted By eugene

Hi, 1. It is neither k = 0.5 (magSqr(U -...

Hi,

1. It is neither k = 0.5 (magSqr(U - Umean))
2. It is a temporal spectrum.
3. f is frequency [Hz], U is the phase velocity = Umean at the measurement location

Hope this helps,

Eugene

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