Descripción
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We pose a quadratic eigenvalue problem (QEP) in order to study the dynamics of flexible cylinders in crossflow. A structural model based on Euler-Bernoulli equation is used together with a fluid loading model yielding to a quadratic eigenvalue problem. The problem includes a form of damping dependent not only on the structural damping itself which is in advance know to be of very small effect in this type of problems, but also on the free stream velocity and the fluid force coefficients. The fluid force model is inspired by that used by Zhou et al. in [1]. We have validated the computations given by our QEP code, against a well known experimental set of data obtained back in 2003 by Chaplin et al. [2], in which a flexible circular cylinder model was used to model the dynamics of a long flexible cylinder undergoing multimode vortex-induced vibrations (VIV). QEP computed results are in very good agreement with the experimental ones. The code allows us to conclude the effect of the flow (force coefficients and current) showing for example that the inclusion of a mean lift coefficient in the eigenvalue problem, produce no variation in its result. | |
Internacional
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Si |
Nombre congreso
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10th International Conference on Flow-Induced Vibration (& Flow-Induced Noise) |
Tipo de participación
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960 |
Lugar del congreso
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Dublín (Irlanda) |
Revisores
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Si |
ISBN o ISSN
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978-0-9548583-4-6 |
DOI
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Fecha inicio congreso
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02/07/2012 |
Fecha fin congreso
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06/07/2012 |
Desde la página
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139 |
Hasta la página
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145 |
Título de las actas
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Proceedings of the 10th International conference on Flow-Induced Vibration (& Flow-Induce Noise) |