ISAV2015 , 2015-11-25

Title : ( New Nonlinear Formulation for Modeling the Vortex- Induced Vibrations of Flexibly Supported Cylinders )

Authors: Seyyed Mahdi Mazloom Moghoddam , Anoshirvan Farshidianfar , Aref Afsharfard ,
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Vibrations of an elastically mounted rigid cylinder excited by steady fluid flow are studied. Because of nonlinearity of real structures, in the present study, dynamic behaviour of the cylinder is described by double Duffing equations and using the quadratic terms, the wake oscillator equations are coupled. Regarding to this approach, the combined cross-flow and in-line Vortex Induced Vibrations (VIV) of the cylinder is modelled in a more accurate manner. Empirical coefficients are adjusted through comparison with previous credible experimental studies. Finally, effects of changing coefficients of the quadratic terms on major VIV parameters are investigated.

Keywords

Vortex induced vibration; Numerical simulation; Nonlinear modeling; Wake oscillator
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@inproceedings{paperid:1049336,
author = {Mazloom Moghoddam, Seyyed Mahdi and Farshidianfar, Anoshirvan and Afsharfard, Aref},
title = {New Nonlinear Formulation for Modeling the Vortex- Induced Vibrations of Flexibly Supported Cylinders},
booktitle = {ISAV2015},
year = {2015},
location = {Tehran, IRAN},
keywords = {Vortex induced vibration; Numerical simulation; Nonlinear modeling; Wake oscillator equation.},
}

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%0 Conference Proceedings
%T New Nonlinear Formulation for Modeling the Vortex- Induced Vibrations of Flexibly Supported Cylinders
%A Mazloom Moghoddam, Seyyed Mahdi
%A Farshidianfar, Anoshirvan
%A Afsharfard, Aref
%J ISAV2015
%D 2015

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