In this study vortex induced vibrations of slender structures in marine environment are considered. Two different approaches are adopted to analyse the complex fluid-structure interactions. First reduced-order model based on non-linear self-excited oscillator of van der Pol type (so-called wake oscillator model) is used to construct multi modes approximations of the transversal oscillations of the straight flexible beam. Then computational fluid dynamics is used to verify the obtained predictions and to calibrate the wake oscillator model. Entrance to and exit from the lock-in conditions are examined in details.
|Title of host publication||Proceedings of the XV International Symposium on Dynamic Problems of Mechanics|
|Place of Publication||Brazil|
|Number of pages||8|
|Publication status||Published - 2013|
|Event||DINAME 2013 – XV International Symposium on Dynamic Problems of Mechanics - Buzios, Brazil|
Duration: 17 Feb 2013 → 22 Feb 2013
|Conference||DINAME 2013 – XV International Symposium on Dynamic Problems of Mechanics|
|Period||17/02/13 → 22/02/13|
Bibliographical noteThis work is supported by the National Subsea Research Institute (NSRI) UK. Authors would like to thank Dr Marko Keber of the University of Aberdeen and Professor Jerzy Warminski of Lublin University of Technology for valuable discussions and helpful advice. The research leading to these results has partially received funding from the European Union Seventh Framework Programme (FP7/2007-2013), FP7 - REGPOT - 2009 - 1, under grant agreement No:245479.
- wake oscillator
- lock in