Abstract
In this work an experimental study of vortex-induced vibration (VIV) was carried out in an collinear array of ten identical cylinders. This investigation was conducted with a mass ratio (\(m^{*}\xi =0.13\)) and a blockage ratio (\(W/D<1\%\)). The inlet flow angle was fixed to \(30^{\circ }\) and the leading cylinder vibration amplitude was compared under the condition of \(0^{\circ }\) inlet flow angle. The free-end cylinders had two degrees of freedom with identical in-line and cross-flow natural frequencies in still fluid medium. The experimental essays were performed in a water tunnel in the lock-in region (\(90<Re<450\)). The results show that the cross-flow vibration amplitude is 68 % reduced when the inlet flow angle increases to \(30^{\circ }\).
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Acknowledgments
The authors thank CONACyT (Mexico) for support from project CB-2007/84618, and PROMEP (México) for a grant from the Extraordinary Funds of PROMEP- UASLP-12-CA04 and PROMEP/103.5/12/7964.
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Oviedo-Tolentino, F., Romero-Méndez, R., Pérez-Gutiérrez, F.G., Gutiérrez-Urueta, G., Méndez-Azúa, H. (2014). Effect of the Inlet Flow Angle on the Vortex Induced Vibration of a Collinear Array of Flexible Cylinders. In: Klapp, J., Medina, A. (eds) Experimental and Computational Fluid Mechanics. Environmental Science and Engineering(). Springer, Cham. https://doi.org/10.1007/978-3-319-00116-6_25
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DOI: https://doi.org/10.1007/978-3-319-00116-6_25
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