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Vortex-induced vibration of catenary riser: reduced-order modeling and lock-in analysis using wake oscillator

Srinil, N. and Wiercigrocha, M. and O'Brien, P. and Younger, R. and , KTP (Funder) (2009) Vortex-induced vibration of catenary riser: reduced-order modeling and lock-in analysis using wake oscillator. In: The 28th International Conference on Ocean, Offshore and Arctic Engineering, 2009-05-31 - 2009-06-05.

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Abstract

A new reduced-order model capable of analyzing the vortex-induced vibration of catenary riser in the ocean current has been developed. This semi analytical-numerical approach is versatile and allows for a significant reduction in computational effort for the analysis of fluid-riser interactions. The incoming current flow is assumed to be steady, uniform, unidirectional and perpendicular to the riser plane of initial equilibrium curvatures.