Performance of a single liquid column damper for the control of dynamic responses of a tension leg platform

dc.contributor.authorJaksic, Vesna
dc.contributor.authorWright, Christopher S.
dc.contributor.authorChanayil, Afeef
dc.contributor.authorAli, Shaikh Faruque
dc.contributor.authorMurphy, Jimmy
dc.contributor.authorPakrashi, Vikram
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderMarine Renewable Energy Ireland
dc.description.abstractTuned liquid column dampers have been proved to be successful in mitigating the dynamic responses of civil infrastructure. There have been some recent applications of this concept on wind turbines and this passive control system can help to mitigate responses of offshore floating platforms and wave devices. The control of dynamic responses of these devices is important for reducing loads on structural elements and facilitating operations and maintenance (O&M) activities. This paper outlines the use of a tuned single liquid column damper for the control of a tension leg platform supported wind turbine. Theoretical studies were carried out and a scaled model was tested in a wave basin to assess the performance of the damper. The tests on the model presented in this paper correspond to a platform with a very low natural frequency for surge, sway and yaw motions. For practical purposes, it was not possible to tune the liquid damper exactly to this frequency. The consequent approach taken and the efficiency of such approach are presented in this paper. Responses to waves of a single frequency are investigated along with responses obtained from wave spectra characterising typical sea states. The extent of control is quantified using peak and root mean squared dynamic responses respectively. The tests present some guidelines and challenges for testing scaled devices in relation to including response control mechanisms. Additionally, the results provide a basis for dictating future research on tuned liquid column damper based control on floating platforms.en
dc.description.sponsorshipMarine Renewable Energy Ireland (Grant No. 12/RC/2302); Science Foundation Ireland (SFI Advance Award 14/ADV/RC3022)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.identifier.citationJaksic, V., Wright, C., Chanayil, A., Ali, S. F., Murphy, J. and Pakrashi, V (2015) 'Performance of a single liquid column damper for the control of dynamic responses of a tension leg platform', Journal of Physics: Conference Series, 628 (1), 012058. doi: 10.1088/1742-6596/628/1/012058en
dc.identifier.journaltitleJournal of Physics: Conference Seriesen
dc.publisherIOP Publishing Ltden
dc.relation.ispartof11th International Conference on Damage Assessment of Structures (DAMAS 2015)
dc.rights© 2015, the Authors. Published under licence in Journal of Physics: Conference Series by IOP Publishing Ltd. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.en
dc.subjectVibration controlen
dc.subjectOffshore structuresen
dc.titlePerformance of a single liquid column damper for the control of dynamic responses of a tension leg platformen
dc.typeArticle (peer-reviewed)en
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