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Biofouling on mooring lines and power cables used in wave energy converter systems - analysis of fatigue life and energy performance
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.
RISE - Research Institutes of Sweden, Säkerhet och transport, Safety. Chalmers University of Technology, Sweden.ORCID-id: 0000-0001-7182-0872
Newcastle University, UK.
2017 (engelsk)Inngår i: Applied Ocean Research, ISSN 0141-1187, E-ISSN 1879-1549, Vol. 65, s. 166-177Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This study presents an analysis of a wave energy converter (WEC) system consisting of a buoy, a mooring system, and a power cable connected to a hub. The investigated WEC system is currently under full-scale testing near Runde in Norway. The purpose of the study was to investigate the characteristics of the entire system, primarily with regard to energy performance and the fatigue life of the mooring lines and power cable, considering the effects of marine biofouling and its growth on the system’s components. By means of parametric study, the energy performance and fatigue life of the mooring lines and power cable were investigated considering two mooring configurations, three biofouling conditions, four sea states in a scatter diagram, and three wave and current directions. Hydrodynamic and structural response simulations were conducted in a coupled response analysis using the DNV-GL software SESAM. Energy performance analyses and stress-based rainflow counting fatigue calculations were performed separately using an in-house code. The results show that, for a WEC system which has been deployed for 25 years, biofouling can reduce the total power absorption by up to 10% and decrease the fatigue life of the mooring lines by approximately 20%

sted, utgiver, år, opplag, sider
2017. Vol. 65, s. 166-177
Emneord [en]
Biofouling; Catenary mooring chain; Fatigue; Power absorption; Power cable; Wave energy converter
HSV kategori
Identifikatorer
URN: urn:nbn:se:ri:diva-30015DOI: 10.1016/j.apor.2017.04.002OAI: oai:DiVA.org:ri-30015DiVA, id: diva2:1117886
Tilgjengelig fra: 2017-06-29 Laget: 2017-06-29 Sist oppdatert: 2018-03-19bibliografisk kontrollert

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