FLUID-STRUCTURE-SOIL INTERACTION OF A MOORED WAVE ENERGY DEVICE: Fluid-structure-soil interaction of a moored wave energy device
This paper explores the response of a wave energy device during extreme and operational conditions and the effect of this response on the geotechnical stability of the associated taut moorings. The non-hydro static wave-flow model SWASH is used to simulate the response of a taut-moored wave energy c...
| Main Authors: | , , , |
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| Format: | Conference Object |
| Language: | English |
| Published: |
ASME
2019
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| Subjects: | |
| Online Access: | https://eprints.soton.ac.uk/432766/ https://eprints.soton.ac.uk/432766/1/OMAE2019_95419.pdf |
| Summary: | This paper explores the response of a wave energy device during extreme and operational conditions and the effect of this response on the geotechnical stability of the associated taut moorings. The non-hydro static wave-flow model SWASH is used to simulate the response of a taut-moored wave energy converter. The predicted forces acting on the mooring system are used to compute the build-up of excess pore pressures in the soil around the mooring anchor and the resulting changes in strength and capacity. An initial loss of strength is followed by a subsequent increase in capacity, associated with long-term cyclic loading and hardening due to consolidation. The analyses show how cyclic loading may actually benefit and reduce anchoring requirements for wave energy devices. It demonstrates the viability of a close interdisciplinary approach towards an optimized and cost-effective design of mooring systems, which form a significant proportion of expected capital expenditures. |
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