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Forum: Main CFD Forum

July 30, 2023, 22:04

Replies: 7

Kinetic energy per integral eddy

Views: 320

Posted By LuckyTran

If you stick an anemometer in the flow and...

If you stick an anemometer in the flow and measure velocity, you have information on only the fluctuations and their periods (i.e. frequency and wavenumbers). You have no spatial information.

If...

Forum: Main CFD Forum

July 30, 2023, 17:26

Replies: 7

Kinetic energy per integral eddy

Views: 320

Posted By LuckyTran

But are you asking about the average energy of an...

But are you asking about the average energy of an eddy of a given size or are you asking if every eddy of a size has the same energy? Think about kinetic theory of gases. If you sample a molecule of...

Forum: Main CFD Forum

July 30, 2023, 16:53

Replies: 7

Kinetic energy per integral eddy

Views: 320

Posted By LuckyTran

If you were to capture all n eddies in a bottle...

If you were to capture all n eddies in a bottle and check their kinetic energies, they wouldn't always be equal. Equipartition only holds for statistics.

Even in the statistical sense, it would...

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