OUR OFFER
Support to engineering consultancy firms, technology and farm developers in the design and in-service monitoring of power cables and moorings
- Stability study of an export cable in an open tidal environment
- Specification of characterisation and fatigue tests of dynamic cables under electro-thermomechanical coupled stress
- Specification, monitoring and analysis of hydrodynamic tests
- Pre-design, adaptation to a given site of a float/mooring/foundation system
- Qualification of a nylon mooring Methodology and development of digital twins for in-service monitoring for moorings
- Custom development of numerical tools and physical models for the design of foundations and moorings for wave and tidal systems
OUR REFERENCES
Several collaborative R&D projects on design and in-service monitoring of subsea power cables and moorings
- Definition of a model for predicting the cables instability laid on rocky seabed, with high current speeds and in the presence of swell in the water column (STHYF project)
- Proposal of a methodology for in-service monitoring fatigue for dynamic export cables of floating ORE systems (OMDYN2 project)
- Precise characterisation of the dynamic and long-term behaviour of nylon mooring lines (POLYAMOOR project)
- Definition of a methodology for in-service monitoring of floating wind turbine moorings (MHM-EMR project)
- Development of the station keeping module of the DTOcean+ software suite dedicated to the optimisation of wave and tidal farms (DTOCEANPLUS project)
OUR RESOURCES
Teams with complementary and cross-disciplinary expertise: physical oceanography, structure calculation, offshore monitoring
Dedicated instrumentation
- 4 measuring cages and instruments that can be attached to them: ADCP 5-beam, hydrophones, acoustic receivers, stereo video, camera
- Video system with anti-fouling protection that can be deployed up to 200 m depth
Digital tools
- Calculation model for the stability of a cable laid on seabed
- Finite element model of hydromechanical assembly behaviour
- Local cable fatigue model
- DeepLinesTM licence
- Nylon anchor line behaviour module interfaced with DeepLinesTM
- NEMOH for the seakeeping of the floats
- Station keeping module of the DTOcean+ suite
Databases
- Hydrodynamic tests: loads on a cable in different roughness conditions for the cable and the seabed
- Alderney Race: hydrosedimentary processes, high-resolution measurement of currents and turbulence
Photo credit: France Energies Marines