The Lir DOB is 35m * 12m and is fitted with an adjustable floor which allows testing at water depths from 0 to 3 m. The basin has 16 hinged force feedback paddles capable of a peak wave generation condition of Hs = 0.6m, Tp = 2.7s and Hmax = 1.1m.
The DOB has been designed to:
The DOB is fitted with a towing carriage that can operate at speeds up to 0.7m/s, a data acquisition system, sensors, 3D motion camera system and a PIV system for flow visualisation.
Services offered by the infrastructure includes:
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The Lir OOE is 25m * 18 m and nominally 1m in depth. A central trench, equipped with a moveable floor, allows for testing at water depths between 1 and 2.5m.
A curved wall of wave generation paddles allows for omnidirectional wave generation which peaks at Hs = 0.16m, Tp = 1.4s and Hmax = 0.32m. The OOE was constructed following the identification, during MARINET1, of the need for more advanced testing infrastructure at early stage Technology Readiness Levels (TRLs).
The OOE has been designed to:
The basin is fitted with a data acquisition system, sensors, 3D motion camera system and a PIV system for flow visualisation.
Services offered by the infrastructure includes:
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The Kelvin Hydrodynamics Lab tank provides excellent conditions for measuring the performance of surface ships and a wide variety of floating and underwater structures.
Ship models used are up to 4m in length. High quality, single frequency waves and random sea states may be generated with wave heights over 0.5m.
The motions of floating vessels and structures are measured using a state-of-the-art, real-time, non-contact infrared camera system.
Resistance dynamometers for different vessel types and model sizes are available as well as a six degree-of-freedom dynamometer for force measurement. Up to 25 wave probes may be used to determine water surface elevation in the tank. A 3-axis fluid velocity measurement system and a PIV system are also available. Pressure distributions on model surfaces can be measured. Above-water and underwater video systems are available.
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The wave basin is 14.6 m x 19.3 m x 1.5 m with an active test area of 13 x 10 m. A deep water pit with size 6.5 m x 2.0 m with up to 6 m extra depth is available. The basin holds up to approximately 400 m3 water (400.000 liters) and accommodates testing on deep and shallow water.
The basin is equipped with long-stroke segmented piston wavemaker for accurate short-crested (3-dimensional) random wave generation with active absorption and pumps for currents. The wavemakers are powered by electric motors which allows for less acoustic noise, no oil pollution in the basin and more accurate waves.
Wave and current generation system for basin
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We perform independent structural testing of turbine blades – static and fatigue – in accordance with IEC and ISO standards, enabling blade manufacturers to achieve industry certification.
We opened our 50m facility in 2005. Tests are delivered to customer requirements and can include:
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This basin allows the physical modelling, at model scale, of offshore floating systems, navigating or anchored, in deep seas (ships, MRE systems, oil&gas).
The wave tank has a large surface area (50 by 30m) and a constant depth of 5m. A segmented flap-type wave maker, cumulating 48 independently- controlled flaps, is present on one of its 30m-long sides. It allows generating basic unidirectional monochromatic sea states up to complex multidirectional sea states encountered in deep water seas. On its opposite side, a quadratic profile stainless steel dissipative beach helps energy dissipation through wave breaking processes.
The wave maker’s power allows generating regular waves with crest-to-through wave height of up to 1m, as well as irregular multidirectional sea states with significant wave height up to 0.65m. Very large amplitude waves, of wave height up to about 2m, can also be generated using space and/or time focusing techniques.
By its size and it wave generation capabilities, it is actually the largest wave tank in France.
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The French research sea test site (SEM-REV) is part of the experimental facilities of Ecole Centrale Nantes to develop marine based energy generation products. The 1km2 site is located 10 nautical miles West-South-West of Le Croisic’s cape on France’s western Atlantic coastline with water depths ranging from 32-36m.
The area has a restricted access for navigation and has all permitting to install Ocean Energy devices to be tested. Offshore wind energy and wave energy converters can be tested, as well as all sub-components and installation and maintenance operations. The site is connected to the grid and has the possibility to connect three devices.
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The circulating water channel by CNR-INSEAN is among the largest EU infrastructures of this type routinely used for testing ORE devices for research and commercial projects. The test section is 3.6 m wide, 2.25 m deep 12 m long. This allows testing large models and model arrays with 2-3 devices in proximity.
Water flow speed is up to 5.3 m/s. The test section can be depressurized down to 3 KPa for model tests in cavitation similitude with respect to full scale.
The facility provides flexibility of operation settings for marine current devices up to TRL 5:
A fake bottom is available to reduce depth and simulate different immersion of bottom fixed devices tested with foundations. Flow turbulence is 3-4%. Higher turbulence intensity or velocity profiles can be modelled by using suitable devices placed at test section inlet.
The facility is equipped with a full range of measuring systems (dynamometers, torque meters, wave gauges, etc.), Laser-Doppler velocimetry equipment (LDV, PIV, Stereo-PIV), high-speed cameras, hydroacoustics sensoring. Acquisition systems can be interfaced with models and equipment by TNA Users.
The facility is designed and equipped for hydrodynamics studies on marine structures and vehicles. For ORE systems, standard services include:
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The towing tanks by CNR-INSEAN form a world-class site for research and industry projects on marine transport, structures and ORE systems, and are classified as Large Oceanographic Infrastructures by the Italian National Research Council. The facility has two infrastructures:
A movable wind-generation rig is available in both tanks. The infrastructure is relevant for testing wave, tidal, offshore wind devices with TRL up to 5. Large-scale models can be tested under combinations of waves, winds and current (by towing) to reproduce relevant operating conditions in a highly controlled and repeatable environment.
Advanced measuring systems are available to fully characterize operating conditions and device performance, including Laser-Doppler velocimetry equipment (LDV, PIV, Stereo-PIV), high-speed cameras, hydroacoustics sensoring. Acquisition systems can be interfaced with models and equipment provided by TNA Users.
Both wave and calm water tanks provide unique conditions for testing complex systems (i.e., hybrid wave/wind concepts), exceptionally large models and model arrays. Tidal turbine model with diameter of 1.5 m was hosted in FP7 MaRINET.
The facility is designed and equipped for hydrodynamics studies on marine structures and vehicles. In case of ORE systems, standard services include:
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The FloWave Ocean Energy Research Facility is a 25m diameter, 2m deep circular combined wave-current basin. The tank is equipped with 168 active-absorbing wavemakers and 28 flow drive units which provide 360-degree independent directional control of the wave and current systems.
The unique configuration of the tank allows for the recreation of highly complex directional sea-states and combined wave-current conditions at scales of approximately 1:20-1:30. FloWave’s staff are highly experienced in the testing of offshore renewable energy technologies and will provide engineering support to clients before, during and after their test programme.
The facility is equipped with a video motion capture system (above and below water), voltage/current data-acquisition, and a selection of instrumentation (including submersible loadcells). The on-site workshop may also be made available for model repair and modification.
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The MARIN Concept Basin has a length of 220 m, a width of 4 m and a depth of 3.6 m. The basin is filled with fresh water. The basin is mainly designed to perform calm water and seakeeping model tests of ships and structures in the concept phase. Furthermore, the basin can be used for research purposes.
The basin has a stiff overhead carriage which runs over the full length of the basin. The maximum speed is 10 m/s.The carriage can be fitted with a large stroke vertical (VIV) oscillator to test vortex induced vibrations on pipes, risers and other slender constructions. Maximum Reynolds number up to 5E5.
Waves and wind
A wave generator is fitted at the end of the basin. The wave generator consists of 8 hinged flaps. Each flap (with a width of 50 cm) has its own driving motor, which is controlled separately. The capacity of the wave generator is up to a significant wave height of 0.55 m at a peak period of 2.3 seconds. Regular wave capacity is 1.1 m at a peak period of 2.3 seconds. Opposite the wave generator, a passive sinkable wave absorber is installed. The wave generator is equipped with compensation of wave reflections form (ARC) the model and the wave absorbing beach. Wave generation is based on higher order wave synthesis techniques.
Wind can be simulated by an adjustable platform spanning the full width of the basin fitted with electrical fans.
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The acronym COAST highlights the laboratory’s multipurpose foci on Coastal, Ocean and Sediment Transport representing a major enhancement in UK capability.
Its construction and equipping was part-funded by ERDF funding through the South West Regional Development Agency (SWRDA), Department of Business, Innovation and Skills (BIS), Department of Energy and Climate Change (DECC), and the Higher Education Funding Council for England (HEFCE) in partnership with the University of Plymouth.
COAST provides a unique capability for research and testing of wave and tidal Marine Renewable Energy (MRE) devices, either alone or in an array, offshore engineering, coastal engineering and environmental impact modelling. Expertise and support derives both from specialist staff appointed to support the facility as well as from academic and technical staff associated with the COAST Engineering Research Group and other recognised research centres within the School of Engineering.
The facilities are nationally and internationally leading in their capability of providing a complete package of model testing and data analysis under combined wave, current and wind loading. The COAST laboratory in unique in the UK and comprises various deep and shallow water experimental facilities including an Ocean Basin, 35 m long x 15.5 m wide x 3 m deep which is operable at different depths of water via a moving floor. The Ocean Basin incorporates 24 flap wave-makers with the additional capability of a recirculating current both in-line with, and transverse to the waves.
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BGO FIRST is a large and deep basin (40mx16mx4.8m) with wave, current and wind generation capabilities and specific features such as its movable and inclinable floor (which allows the performance of tests in any water depth, from 0 to 4.8m), its pit of a 10m total depth, its large amplitude forced motions platform, its dynamic winch as an alternative to wind generation, its PTOs, its DP pods, its in-house workshop and instrumentation, its experienced personnel… The combination of these capabilities makes the BGO FIRST be on the most equipped sea keeping tank in Europe.
It has been operated since 1998 by OCEANIDE who has now more than 230 tests campaign references in this facility, mainly for the energy industry. More information can be found on OCEANIDE web site: www.oceanide.net.
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The Dutch Marine Energy Centre provides excellent opportunities for tidal energy converter testing at intermediate scale. The onshore facility Den Oever is located in two ducts of the Afsluitdijk, in an existing sluice that discharges water from the IJsselmeer to the Wadden Sea. The main function of the sluices always remains dominant; test equipment must be placed in such a way that it can be easily removed or lifted. Basic infrastructure is available, including E&I grid, ADCP, and reaction construction (foundation). The site is typically used for 1:1 scaled river turbine applications, and for 1:4 scaled tidal stream solutions
The Dutch Marine Energy Centre provides excellent opportunities for tidal energy converter testing at intermediate scale. The location at Marsdiep is sheltered and well-accessible via the NIOZ harbour, and the water column has a depth of over 20 metres. The Marsdiep location can be equiped with a floating platform. DMEC has the permit to use a near shore location for testing tidal turbines. The location is used by a consortium which developed the floating BlueTEC platform. Under conditions to be set, the platform can be made available for testing. But at the Marsdiep Berth other platforms can be tested as well. Anchor points, umbilical, grid connection can be made available if needed.
The PLOCAN Marine Test Site is located on the East coast of Gran Canaria Island (Spain, www.plocan.eu). The Canary Islands are located in the Atlantic Ocean, south-west of Spain and Northwest of Africa. The marine test site includes an area of about 23 km2 with a wide range of water depth from shoreline to 600 m. This Marine Test Site is available to projects focused on testing and demonstrating of all kinds of marine devices but mainly marine renewable energy converters. The final testing decision would be conditioned to the appropriateness, opportunity and availability of the facilities.
The electrical and communication infrastructure (REDSUB) is composed of two medium voltage cables (13.2kV) with a capacity of 5MW, each one, within the range of ±1% of 50Hz. The infrastructure will be mostly underwater, comprising hybrid cabling, with copper cables for the transmission of electrical power and fibre optics for data transmission, including a short terrestrial section to connect to the electrical substation on land. The onshore infrastructure will go from the manhole up to the electrical substation (66kV), where the electricity is raised up for its deliver to the national transmission grid. The onshore infrastructure will be composed by an underground medium voltage cable with a capacity of 15MW, by a power transformer station (13.2kV to 66kV) and all electrical protections required. This part will only be available after the Summer of 2017.
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