Effects of Co-located Floating Wind-Wave Systems on Fatigue Damage of Floating Offshore Wind Turbine Mooring Cables

Caitlyn E. Clark*, Guilherme Moura Paredes

*Corresponding author for this work

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

3 Citations (Scopus)

Abstract

Industrial realization of both floating offshore wind and wave energy technologies requires reductions in the current high levelized cost of energy. Reducing mooring fatigue loads could decrease levelized cost of energy, as mooring is expected to be a major cost of these systems. Previous work on improving mooring reliability and costs has focused on material and design. In this exploratory study, we quantify how placing WECs in front of a FOWT could reduce fatigue damage incurred by FOWT mooring cables in long-crested wave conditions. We use SWAN to quantify the WEC-induced sea state modifications and obtain wave spectra at the FOWT location. The spectra are then input into WEC-Sim and MooDy to model the mooring cable behavior. Fatigue analysis with Rainflow Counting is used to quantify the fatigue loading on the mooring cables. Results from this study show a 8% reduction in fatigue damage to mooring cables over the lifetime of the structure. These results indicate that co-location could have a beneficial effect on FOWT mooring cable fatigue. In future work, these results will be leveraged to perform optimal O&M planning and reliability-based design optimization of floating offshore wind turbines.

Original languageEnglish
Title of host publicationASME 2018 1st International Offshore Wind Technical Conference
Number of pages11
PublisherAmerican Society of Mechanical Engineers
Publication date2018
PagesV001T01A024
Article numberIOWTC2018-1077
ISBN (Electronic)978-0-7918-5197-5
DOIs
Publication statusPublished - 2018
EventASME 2018 1st International Offshore Wind Technical Conference, IOWTC 2018 - San Francisco, United States
Duration: 4 Nov 20187 Nov 2018

Conference

ConferenceASME 2018 1st International Offshore Wind Technical Conference, IOWTC 2018
Country/TerritoryUnited States
CitySan Francisco
Period04/11/201807/11/2018
SponsorOcean, Offshore and Arctic Engineering Division

Keywords

  • Cables
  • Fatigue damage
  • Mooring
  • Offshore wind turbines
  • Wind waves

Fingerprint

Dive into the research topics of 'Effects of Co-located Floating Wind-Wave Systems on Fatigue Damage of Floating Offshore Wind Turbine Mooring Cables'. Together they form a unique fingerprint.

Cite this