Analysis of the coupled dynamic response of an offshore floating multi-purpose platform for the blue economy

Liang Li, Carlo Ruzzo, Maurizio Collu, Yan Gao, Giuseppe Failla, Felice Arena

Research output: Contribution to journalArticle

Abstract

A multi-purpose platform is an offshore system designed to serve the purposes of more than one offshore industry. Within the context of "The Blue Growth Farm" project, an innovative multi-purpose configuration, comprising a wind turbine, wave energy converters, and an internal pool to accommodate aquaculture fish cages, has been proposed. The present work proposes a framework to assess the coupled dynamic response of the multi-purpose platform in realistic environmental conditions. A simplified parametric analysis of the structure is first carried out to propose a preliminary design of the platform. The preliminary design is subsequently investigated through hydro-elastic and aero-hydro-servo-elastic coupled analyses. Modal analysis is performed through a 3D finite-element structural model. It confirms the feasibility of rigid-body hypothesis for the dynamic analysis of the support structure and manifests that the vibration modes of the structure are not excited by wave or wind loads. In order to assess the coupled dynamic responses, an aero-hydro-servo-elastic coupled numerical model is developed. The motion and structural responses in operational and survival states are investigated. A modified mean up-crossing rate method has been employed to assess the ultimate limit state. The results obtained from the present research confirm the technical feasibility of the proposed configuration and provide a reference for further studies on similar concepts.
Original languageEnglish
Article number107943
JournalOcean Engineering
Volume217
Early online date6 Sep 2020
DOIs
Publication statusE-pub ahead of print - 6 Sep 2020

Keywords

  • multi-purpose platform
  • floating wind turbine
  • wave energy converter
  • parametric analysis
  • hydro-elastic analysis
  • coupled dynamic analysis
  • ultimate limit state

Fingerprint Dive into the research topics of 'Analysis of the coupled dynamic response of an offshore floating multi-purpose platform for the blue economy'. Together they form a unique fingerprint.

  • Projects

    The Blue Growth Farm

    Collu, M. & Li, L.

    1/07/181/01/22

    Project: Research

    Research Output

    • 1 Conference contribution book
    • 1 Proceeding

    Development and validation of a coupled numerical model for offshore floating multi-purpose platforms

    Li, L., Collu, M., Gao, Y., Ruzzo, C., Arena, F., Taruffi, F., Muggiasca, S. & Belloli, M., 15 Oct 2020. 8 p.

    Research output: Contribution to conferenceProceeding

    Open Access
    File
  • Analysis of the coupled dynamics of an offshore floating multi-purpose platform: part A - rigid body analysis

    Li, L., Collu, M., Ruzzo, C., Failla, G., Abhinav, K. A. & Arena, F., 11 Nov 2019, ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering: Volume 6: Ocean Space Utilization. New York, 7 p.

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

  • 5 Citations (Scopus)

    Cite this