Verification and Validation of Multisegmented Mooring Capabilities in FAST v8

Fabian Wendt, Amy Robertson, Jason Jonkman, Morten Andersen, Matthew Hall

Research output: Contribution to conferencePaperpeer-review

9 Scopus Citations

Abstract

The quasi-static and dynamic mooring modules of the open-source aero-hydro-servo-elastic wind turbine simulation software, FAST v8, have previously been verified and validated, but only for mooring arrangements consisting of single lines connecting each fairlead and anchor. This paper extends the previous verification and validation efforts to focus on the multisegmented mooring capability of the FAST v8 modules: MAP++, MoorDyn, and the OrcaFlex interface. The OC3-Hywind spar buoy system tested by the DeepCwind consortium at the MARIN ocean basin, which includes a multisegmented bridle layout of the mooring system, was used for the verification and validation activities. This paper focuses on free-decay tests because the influence of the multisegmented moorings is most important for yaw motion, which is not excited by waves. All of the listed modules are able to represent the platform motion observed in the experimental data to a satisfactory degree. MoorDyn and the benchmark tool (OrcaFlex) yield almost indistinguishable results. But due to limitations of the system tested and data obtained, further work is needed to truly validate the multisegmented capability.

Original languageAmerican English
Pages371-378
Number of pages8
StatePublished - 2016
Event26th Annual International Ocean and Polar Engineering Conference, ISOPE 2016 - Rhodes, Greece
Duration: 26 Jun 20161 Jul 2016

Conference

Conference26th Annual International Ocean and Polar Engineering Conference, ISOPE 2016
Country/TerritoryGreece
CityRhodes
Period26/06/161/07/16

Bibliographical note

See NREL/CP-5000-65824 for preprint

NREL Publication Number

  • NREL/CP-5000-67225

Keywords

  • Floating offshore wind turbine
  • Modeling
  • Multisegmented mooring
  • Validation
  • Verification

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