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ISLINGTON

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Improved SoiL-cable Interaction mooriNG simulaTiONs

Moorings of floating oil and gas (O&G) structures exhibit surprisingly large failure rates. In the O&G industry this problem is simply handled by redundancy in the design. It is unlikely that marine renewables - in order to obtain... ver más

30/11/2024

AAU

Presupuesto desconocido

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AALBORG UNIVERSITET No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo HORIZON EUROPE notifico la concesión del proyecto el día 2024-11-30

HORIZON-MSCA-2021-PF-01-01: MSCA Postdoctoral Fellowships 2021 ExpectedOutcome:

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Duración del proyecto: 23 meses Fecha Inicio: 2022-12-01
Fecha Fin: 2024-11-30

Líder del proyecto

AALBORG UNIVERSITET No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Moorings of floating oil and gas (O&G) structures exhibit surprisingly large failure rates. In the O&G industry this problem is simply handled by redundancy in the design. It is unlikely that marine renewables - in order to obtain a competitive levelised cost of energy (LCOE) can afford such redundancy in the mooring design. ISLINGTON has the overall objective to reduce uncertainties in estimated fatigue damage of mooring cables due to soil-cable interaction in the touch down zone (TDZ); and subsequently lower the economic cost of mooring systems for marine renewables. To achieve this objective, the following research actions will be carried out: 1) Improving the numerical modelling of the cable-soil interaction in the TDZ for mooring cables by allowing for time-dependent granular soil dynamics. This will be done by creating an Application Programming Interface (API) inside a granular particle soil solver to allow a two-way coupling to a mooring cable solver providing position and motion of the mooring cable. 2) Generating experimental data for mooring line trenching to be used for validation. This will be done by forced oscillations of a cable in a wave flume with sandy bottom and log the development of the trenching under different forcing. 3) Numerical investigation of the effect of trenching on fatigue of mooring cables. This will be done for standard test cases such as the IAE Task 30: OC3-OC6 test cases. The work proposed is well beyond state-of-art with respect to ground modelling of mooring cables in that the bathymetry will be time-dependent so trenching will be modelled together with the nonlinear cable response. The work on trenching effect to mooring line fatigue and snap load generation and dissipation will be the first such investigation. The resulting papers, models and experimental datasets will be released open-access in line with the open science practice.

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