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Article

Study of Snap Loads for Idealized Mooring Configurations with a Buoy, Inextensible and Elastic Cable Combinations for the Multi-Float M4 Wave Energy Converter

1
School of Engineering, University of Manchester, Manchester M13 9PL, UK
2
Department of Civil Engineering, Ghent University, 9000 Ghent, Belgium
*
Author to whom correspondence should be addressed.
Water 2020, 12(10), 2818; https://doi.org/10.3390/w12102818
Received: 22 August 2020 / Revised: 30 September 2020 / Accepted: 7 October 2020 / Published: 11 October 2020
There has been considerable modelling and wave basin validation of the multi-mode, multi-float, moored wave energy converter M4. The 6 float (2 power take off) (PTO) configuration is considered here with mooring from a buoy with light inextensible cables. Large mean mooring forces and very large peak or snap forces were measured in large waves while the rotational response about the hinges (for power take off in operational conditions) was predominantly linear. Modelling has been extended with elastic mooring cables connected directly to the base of the bow float and to the buoy. The experimental mean force is input to the linear diffraction/radiation model. The device response is effectively unchanged. The peak mooring force and tensions remain large with direct connection to the base of the bow float but are only slightly greater than the mean forces with elastic cables to the buoy, and an elastic hawser provides a further slight reduction. For the largest waves measured, the force was about 10% of the dry weight of the platform. The idealized efficient modelling may inform more detailed design while efficient methods for determining highly nonlinear mean forces remain to be established. View Full-Text
Keywords: wave energy converter; multi-float; mooring configurations; elastic cables; mooring buoy; snap loads wave energy converter; multi-float; mooring configurations; elastic cables; mooring buoy; snap loads
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MDPI and ACS Style

Stansby, P.; Carpintero Moreno, E. Study of Snap Loads for Idealized Mooring Configurations with a Buoy, Inextensible and Elastic Cable Combinations for the Multi-Float M4 Wave Energy Converter. Water 2020, 12, 2818. https://doi.org/10.3390/w12102818

AMA Style

Stansby P, Carpintero Moreno E. Study of Snap Loads for Idealized Mooring Configurations with a Buoy, Inextensible and Elastic Cable Combinations for the Multi-Float M4 Wave Energy Converter. Water. 2020; 12(10):2818. https://doi.org/10.3390/w12102818

Chicago/Turabian Style

Stansby, Peter, and Efrain Carpintero Moreno. 2020. "Study of Snap Loads for Idealized Mooring Configurations with a Buoy, Inextensible and Elastic Cable Combinations for the Multi-Float M4 Wave Energy Converter" Water 12, no. 10: 2818. https://doi.org/10.3390/w12102818

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