Large scale mooring line experiments and comparison with a fully dynamic simulation program with importance to WEC installation

Lars Johanning, George H. Smith, Colin Bullen

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

3 Citations (Scopus)

Abstract

Large scale experiments with an 82t vessel moored on a 22mm single chain at a mean water depth of 24m were performed at Scapa Flow (Orkney) to study mooring conditions for the installation of wave energy converters (WECs). Tension and response behaviour were found for various pre-tension conditions using horizontal and axial load measurement techniques and a GPS system for tracking the motion of the vessel. The pre-tension conditions were chosen to provide a slack, fully lifted and taut mooring line arrangement. The study also includes a numerical model of the experiments by applying line properties, installation conditions and the displacement measurements to the simulation and calculating the resulting tensions. The experimental problems that were overcome to obtain meaningful results from large scale experiments under real sea conditions are explained and the importance of mooring line dynamics for WECs is discussed. Copyright © 2007 by The International Society of Offshore and Polar Engineers(ISOPE).

Original languageEnglish
Title of host publicationProceedings of The Seventeenth 2007 International Offshore and Polar Engineering Conference, ISOPE 2007
Pages455-462
Number of pages8
Publication statusPublished - 2007
Event17th 2007 International Offshore and Polar Engineering Conference - Lisbon, Portugal
Duration: 1 Jul 20076 Jul 2007

Conference

Conference17th 2007 International Offshore and Polar Engineering Conference
Abbreviated titleISOPE 2007
CountryPortugal
CityLisbon
Period1/07/076/07/07

Keywords

  • Dynamic mooring line behaviour
  • Large scale experiments
  • Wave energy converter

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