The effect of marine growth dynamics in offshore wind turbine support structures

M. Martinez-Luengo, P. Causon, A. B. Gill, A. J. Kolios

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)
17 Downloads (Pure)

Abstract

Offshore Wind Turbine (OWT) support structures are invariably subject to colonisation by marine organisms, which are not spatially or temporally linear. Marine Growth (MG) varies based on location and season, and with structural and material characteristics. MG is a major consideration for engineers. As organisms settle on the structure they may increase surface roughness and cross-sectional area, altering drag and inertia coefficients and increasing hydrodynamic loading. Furthermore, the added mass from MG also influences structural integrity. As such, there is considerable uncertainty surrounding the response of OWTs to MG, as this phenomenon is often overlooked in FEA modelling. This paper uses the parametric FEA model of an OWT support structure developed in (Martinez-Luengo, Kolios, and Wang 2017) to analyse how different growth rates and patterns of zonation of MG affect the structural integrity of the system. MG has a great impact in the fatigue life of the structure, as a reduction of 58.6-59.2% is presented in the baseline scenarios.

Original languageEnglish
Title of host publicationProgress in the Analysis and Design of Marine Structures
Subtitle of host publicationProceedings of the 6th International Conference on Marine Structures, MARSTRUCT 2017
EditorsCarlos Guedes Soares, Y. Garbatov
Place of PublicationLeiden
Pages889-898
Number of pages10
Edition1st
DOIs
Publication statusPublished - 24 Apr 2017
Event6th International Conference on Marine Structures, MARSTRUCT 2017 - Lisbon, Portugal
Duration: 8 May 201710 May 2017

Conference

Conference6th International Conference on Marine Structures, MARSTRUCT 2017
CountryPortugal
CityLisbon
Period8/05/1710/05/17

Keywords

  • offshore wind turbine support structures
  • marine growth (MG)

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