Research & Development

Project

THYMOTE

Tidal turbulence: modelling, field observations and tank experiments

Context

Tidal sites are, by definition, places where the strongest tidal currents are found. They usually flow over complex rocky bathymetries that generate intense turbulent motions. To understand the turbulent nature of this flow is critical for maximising tidal turbine yield and minimising structural fatigue. Development of the tidal energy industry would benefit from improved knowledge of turbulent flow properties.

Projet THYMOTE

Objective

  • To combine measurements and numerical development to obtain high resolution information on the turbulent flow of tidal sites

Main achievements

In-situ measurements of currents flowing over rocky seabeds with complex bathymetry and generating intense turbulent movements

Tank tests

Development of numerical codes

Main outputs

  • 4 measuring cages and various instruments that can be attached to them: ADCP 5-beam, hydrophone, acoustic receivers, stereo video, camera
  • Databases: currentology and hydrosedimentary processes measured with 2 ADCP current profilers, 2 point current meters, 4 hydrophones and acoustic pebble tracing – Alderney Race (North-West of the temporary occupation permit zone) – September 2017 to May 2018

Conclusion

THYMOTE has led to the development of numerical tools to better apprehend the turbulent processes present on tidal sites. The calculation tools developed in association with the resources of France Energies Marines are now available to support the players in the tidal turbine sector in the fine characterisation of turbulence on sites of interest for the deployment of tidal turbine systems.

Partners

This project was led by Université de Caen Normandie and France Energies Marines.

Logo France Energies Marines
Logo Université de Caen Normandie
Logo DynamOcean
Logo EDF
Logo ENGIE
Logo Ifremer
Logo Innosea 2019
Logo IXSurvey
Logo Naval Energies
Logo Université Le Havre Normandie

Funding

This project received French State funding managed by the National Research Agency under the Investments for the Future Programme (ANR-10-IEED-0006-11).

Logo Investir l'Avenir

Accreditation

This project was certified by the maritime cluster Pôle Mer Bretagne Atlantique.

Logo Pôle Mer Bretagne Atlantique

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