Please use this identifier to cite or link to this item: http://hdl.handle.net/11422/8599
Type: Artigo
Title: Prediction of Vortex-Induced Vibration of Long Flexible Cylinders Modeled by a Coupled Nonlinear Oscillator: Integral Transform Solution
Author(s)/Inventor(s): An, Chen
Gu, Ji-jun
Conceição, Carlos Antonio Levi da
Su, Jian
Abstract: Indisponível.
Abstract: The Generalized Integral Transform Technique (GITT) was applied to predict dynamic response of Vortex-Induced Vibration (VIV) of a long flexible cylinder. A nonlinear wake oscillator model was used to represent the cross-flow force acting on the cylinder, leading to a coupled system of second-order Partial Differential Equations (PDEs) in temporal variable. The GITT approach was used to transform the system of PDEs to a system of Ordinary Differential Equations (ODEs), which was numerically solved by using the Adams-Moulton and Gear method (DIVPAG) developed by the International Mathematics and Statistics Library (IMSL). Numerical results were presented for comparison to those given by the finite difference method and experimental results, allowing a critical evaluation of the technique performance. The influence of variation of mean axial tension induced by elongation of flexible cylinder was evaluated, which was shown to be not negligible in numerical simulation of VIV of a long flexible cylinder.
Keywords: Vortex-Induced Vibration (VIV)
Nonlinear wake oscillator
Flexible cylinder
Integral transform
Subject CNPq: CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
Department : Núcleo Interdisciplinar de Dinâmica dos Fluidos
Publisher: Springer Verlag
In: Journal of Hydrodynamics
Volume: 24
Issue: 6
Issue Date: 1-Dec-2012
DOI: 10.1016/S1001-6058(11)60317-X
Publisher country: Brasil
Language: eng
Right access: Acesso Aberto
ISSN: 1001-6058
Appears in Collections:Engenharias

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