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Forum: Main CFD Forum

August 31, 2013, 09:15

Replies: 7

vortex shedding frequency

Views: 1,650

Posted By agd

Um, no. See for example ...

Um, no. See for example

http://www.dtic.mil/dtic/tr/fulltext/u2/a273243.pdf

The instantaneous lift force on the cylinder is not zero. Th average lift force is zero. The average drag will...

Forum: Main CFD Forum

August 30, 2013, 22:30

Replies: 7

vortex shedding frequency

Views: 1,650

Posted By agd

While the time-averaged lift will be zero, the...

While the time-averaged lift will be zero, the instantaneous lift force should oscillate at the shedding frequency. Computing the lift is extra effort, but it can provide additional information on...

Forum: Main CFD Forum

August 22, 2013, 15:12

Replies: 7

vortex shedding frequency

Views: 1,650

Posted By agd

Compute the lift, store the time history of the...

Compute the lift, store the time history of the lift, and then do an FFT of the lift history. Or, simply measure the period of the cycle from the lift history and invert.

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