HELICAL STRAKELETS AND VORTEX SHEDDING ON COLUMNS

This is a journal entry.  I am working on a wind power project and vibration may be a real issue.

This is a good representation of what happens in turbulent airflow around a column:

https://www.youtube.com/watch?feature=player_detailpage&v=wCsiOvsPpKA#t=2509

We use strakelets on wings and jet engine nacelles.

No doom here - unless you forget to check for the natural frequency of an object related to airflow around it.....