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Energy harvesting from transverse galloping

✍ Scribed by A. Barrero-Gil; G. Alonso; A. Sanz-Andres

Book ID
104034039
Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
777 KB
Volume
329
Category
Article
ISSN
0022-460X

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✦ Synopsis

Some elastic bluff bodies under the action of a fluid flow can experience transverse galloping and lose stability if the flow velocity exceeds a critical value. For flow velocities higher than this critical value, there is an energy transfer from the flow to the body and the body develops an oscillatory motion. Usually, it is considered as an undesirable effect for civil or marine structures but here we will show that if the vibration is substantial, it can be used to extract useful energy from the surrounding flow. This paper explores analytically the potential use of transverse galloping in order to obtain energy. To this end, transverse galloping is described by a one-degree-offreedom model where fluid forces obey the quasi-steady hypothesis. The influence of cross-section geometry and mechanical properties in the energy conversion factor is investigated.

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