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Paper waves in the wind
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DOI：10.1063/1.4931777.png)
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摘要
En 中文
A flexible sheet clamped at both ends and submitted to a permanent wind is unstable and propagates waves. Here, we experimentally study the selection of frequency and wavenumber as a function of the wind velocity. These quantities obey simple scaling laws, which are analytically derived from a linear stability analysis of the problem and which also involve a gravity-induced velocity scale. This approach allows us to collapse data obtained with sheets whose flexible rigidity is varied by two orders of magnitude. This principle may be applied in the future for energy harvesting. (C) 2015 AIP Publishing LLC.
Keyword:
CANTILEVERED FLEXIBLE PLATES
AEROELASTIC INSTABILITY
FLUTTER
FLOW
AERODYNAMICS
STABILITY
MODEL
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期刊
IF:
4.3
论文数:
2.9W
被引数:
8.0W
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