Abstract
Sky dancers are long vertical flexible tubes which fluctuate above an air blower. These systems involve fluid-structure interactions that can give rise to complex dynamics. Air flow which passes through the tube deforms the tube wall which in turn modifies the flow hydrodynamical properties, and so on. We present in this article an experiment which models a sky dancer. The blown air speed can be varied and tubes of low rigidity and of different dimensions are used. The critical values of the flow velocity for which each tube begins “dancing” are measured. Comparisons with previous theoretical studies conducted for much more rigid tubes (Païdoussis, J Sound Vib 33:267–294, 1970) allow us to show that for tubes of low rigidity, the mechanism of destabilization is different.
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© 2012 Springer-Verlag Berlin Heidelberg
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Cros, A., Romero, J.A.R., Flores, F.C. (2012). Sky Dancer: A Complex Fluid-Structure Interaction. In: Klapp, J., Cros, A., Velasco Fuentes, O., Stern, C., Rodriguez Meza, M. (eds) Experimental and Theoretical Advances in Fluid Dynamics. Environmental Science and Engineering(). Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-17958-7_2
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DOI: https://doi.org/10.1007/978-3-642-17958-7_2
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