Comparison between full-scale measurements and numerical simulations of mooring forces in a floating point-absorbing WEC system
Paper in proceedings, 2018

The design of functional elastic mooring systems for floating point-absorbing wave energy converters (WECs) is important for the WEC’s power capture, the durability and reliability of the mooring system. This study pre-sents results from the OCEANERA-NET project ELASTMOOR where Waves4Power’s WEC WaveEL 3.0 is used as a reference case for full-scale measurements of mooring line forces. The elastic mooring system consists of three mooring legs, where each leg is divided into two mooring lines with an intermediate submerged floater. The WaveEL 3.0 WEC is installed outside Runde in Norway and its mooring forces have been measured con-tinuously between June and November, 2017. A numerical simulation model of the full-scale installation has been developed in the DNV GL software SESAM. The study presents a comparison between the mooring forc-es from full-scale measurements and simulations for various environmental load conditions. The results are dis-cussed with regards to uncertainties and the prediction capacity of the numerical model.

mooring lines

mooring forces

numerical simulations

Wave energy

full-scale measurements

Author

Xiao Lang

Chalmers, Mechanics and Maritime Sciences, Marine Technology

Shun-Han Yang

Chalmers, Mechanics and Maritime Sciences, Marine Technology

Jonas Ringsberg

Chalmers, Mechanics and Maritime Sciences, Marine Technology

Erland Johnson

RISE Research Institutes of Sweden

Chalmers, Mechanics and Maritime Sciences, Marine Technology

Carlos Guedes Soares

University of Lisbon

Magnus Rahm

Waves4Power AB

Advances in Renewable Energies Offshore - Proceedings of The 3rd International Conference on Renewable Energies Offshore (RENEW 2018)

2638-647X (ISSN)

865-873

Advances in Renewable Energies Offshore - Proceedings of The 3rd International Conference on Renewable Energies Offshore (RENEW 2018)
Lisbon, Portugal,

Chalmers Area of Advance Transport – funding 2018

Chalmers, 2018-01-01 -- 2018-12-31.

ELASTMOOR - Elastic mooring systems for wave energy converters

Swedish Energy Agency, 2017-04-01 -- 2020-05-31.

Simulation model for operation and maintenance strategy of floating wave energy converters - analysis of fatigue, wear, and influence of biofouling for effective and profitable energy harvesting

Swedish Energy Agency, 2016-06-01 -- 2018-05-31.

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C3SE (Chalmers Centre for Computational Science and Engineering)

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10/11/2018