PRESSFlutter of a flag
The flutter of a flag in a gentle breeze, or the flapping
of a sail in a rough wind are commonplace and familiar
observations of a rich class of problems involving
the interaction of fluids and structures, of wide interest
and importance in science and engineering. In a recent
study, we studied the mechanism that leads to this
instability using a combination of analysis and scaling
that lead us to a relatively simple theory for the
critical velocity for the onset of flutter and the
frequency of flapping.
Image
courtesy of M. Argentina
Related Article
- Fluid-flow induced flutter
of a flag, Argentina, M. and L. Mahadevan, Proceedings
of the National Academy of Sciences (USA), 102,
1829-34, 2005.
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