The Wave Dragon Wave Energy Converter is ready to be up-scaled to commercial size. The design and feasibility analysis of a 1.5 MW pre-commercial unit to be deployed at the DanWEC test center in Hanstholm, Denmark, is currently ongoing. With regard to the mooring system, the design has to be carried out numerically, through coupled analyses of alternative solutions. The present study deals with the preliminary hydrodynamic characterization of Wave Dragon needed in order to calibrate the numerical model to be used for the mooring design. A hydrodynamic analysis of the small scale model in the frequency domain is performed by the software HydroD, which uses WAMIT as core software. The quadratic damping term, accounting for the viscous effect, is determined through an iterative procedure aimed at matching numerical predictions on the mooring tension, derived through time domain coupled analysis, with experimental results derived from tank tests of a small scale model. Due to the complex geometry of the device, a sensitivity analysis is performed to discuss the influence of the mean position on the quality of the numerical predictions. Good correspondence is achieved between the experimental and numerical model. The numerical model is hence considered reliable for future design applications.
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ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering
July 1–6, 2012
Rio de Janeiro, Brazil
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4494-6
PROCEEDINGS PAPER
Comparison of Mooring Loads in Survivability Mode on the Wave Dragon Wave Energy Converter Obtained by a Numerical Model and Experimental Data
Stefano Parmeggiani,
Stefano Parmeggiani
Wave Dragon Ltd., England, United Kingdom
Aalborg University, Aalborg, Denmark
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Made Jaya Muliawan,
Made Jaya Muliawan
CeSOS, NTNU, Trondheim, Norway
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Erik Friis-Madsen
Erik Friis-Madsen
Wave Dragon Aps, Copenhagen, Denmark
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Stefano Parmeggiani
Wave Dragon Ltd., England, United Kingdom
Aalborg University, Aalborg, Denmark
Made Jaya Muliawan
CeSOS, NTNU, Trondheim, Norway
Zhen Gao
CeSOS, NTNU, Trondheim, Norway
Torgeir Moan
CeSOS, NTNU, Trondheim, Norway
Erik Friis-Madsen
Wave Dragon Aps, Copenhagen, Denmark
Paper No:
OMAE2012-83415, pp. 341-350; 10 pages
Published Online:
August 23, 2013
Citation
Parmeggiani, S, Muliawan, MJ, Gao, Z, Moan, T, & Friis-Madsen, E. "Comparison of Mooring Loads in Survivability Mode on the Wave Dragon Wave Energy Converter Obtained by a Numerical Model and Experimental Data." Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. Volume 7: Ocean Space Utilization; Ocean Renewable Energy. Rio de Janeiro, Brazil. July 1–6, 2012. pp. 341-350. ASME. https://doi.org/10.1115/OMAE2012-83415
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