SLIDE 1
5 August 2015
Deltares
Independent institute for applied research in the field of water, subsurface and infrastructure
5 August 2015 Deltares - Pro-Tide workshop 2
Tidal Energy Deltares expertise Arnout Bijlsma en Luca van Duren 5 - - PowerPoint PPT Presentation
Tidal Energy Deltares expertise Arnout Bijlsma en Luca van Duren 5 - - PowerPoint PPT Presentation
Tidal Energy Deltares expertise Arnout Bijlsma en Luca van Duren 5 August 2015 Deltares Independent institute for applied research in the field of water, subsurface and infrastructure Deltares - Pro-Tide workshop 5 August 2015 2 Deltares
SLIDE 2
SLIDE 3
Deltares – Pro-Tide workshop
1. Which developments, projects and/or activities regarding tidal energy take place in your country?
- Pilot Bluetec Marsdiep – floating platform (Bluewater,Tocardo)
- Pilot Tidal Turbines Oosterschelde Barrier (Tocardo, OTP)
- Pilot Tidal Turbines Afsluitdijk (Tocardo)
- Development Brouwersdam (projectbureau GCBD, Pro-Tide)
- Swansea Bay Tidal Lagoon (TLP)
2. Which expertise is needed/requested in order to realize these ?
- Hydrodynamic modelling (2D/3D HD, CFD, Physical Model Testing)
- Operational optimization tools
- Environmental effect assessment tools
3. What is the specific expertise of your institution?
- R&D, development of tools
- Specialist consultancy
- All water & sub soil related issues
5 August 2015 Deltares - Pro-Tide workshop 3
SLIDE 4
FLUID DYNAMICS POWER PRODUCTION
SLIDE 5
Tidal turbines
Near-field hydrodynamics
- CFD model of tidal turbines and detailed infrastructure
(Energising delta’s concept) Validation
- Single turbine in CFD matches well with Blade
Element Momentum (BEM) computations of Tocardo
- Barrier in CFD vs current measurements & water levels Oosterschelde (2011)
- Barrier + turbines: new measurements in 2015+
- Effect of turbines on flow through barrier or sluice gate,
and reverse
Application
- Optimization of power production, minimization
environmental effects
- Input for turbine design tools
(flow velocity, velocity gradients, turbulence, waves)
Coupling with far-field hydrodynamic models
5 August 2015 Deltares - Pro-Tide workshop 5
SLIDE 6
Roompot #08
5 August 2015 Deltares - Pro-Tide workshop 6
SLIDE 7
Swansea Bay Tidal lagoon
320 MW tidal lagoon
- ptimization of power production
- minimization environmental effects
5 August 2015 Deltares - Pro-Tide workshop 7
CFD
- Turbines & sluices
Physical Model Testing
- Turbines & sluices
Hydrodynamic modelling
- Bristol Channel
- Swansea Bay
SLIDE 8
MINIMISING ENVIRONMENTAL IMPACTS
SLIDE 9
Environmental impacts
5 August 2015 Deltares - Pro-Tide workshop 9
- Sustainable
- Low carbon emissions
- Any structure in the environment will
have some impact
- These need to be known to
- Obtain permits for operation
- Demonstrate environmental
friendliness
SLIDE 10
Stress factors, near field – far field
5 August 2015 Deltares - Pro-Tide workshop 10
Presence
- Static effects
- Dynamic effects
- Chemical effect
- Acoustic effects
- Electromagnetic effects
Energy reduction in the environment Cumulative effects Note:
- Near-field effects (collision of fish or seals
with rotor blades) have large public impact.
- Far-field effects are less obvious but have
far greater consequences
SLIDE 11
Oosterschelde example
- D3D-ecosystem scale models
- Can be coupled to Individual Based
Modelling (fish behaviour)
- Large-scale ecosystem circulation
relevant for ecosystem functioning (residence times, carrying capacity, transport)
- Boundary conditions for CFD models
Small-scale coupled to large-scale
5 August 2015 Deltares - Pro-Tide workshop 11
SLIDE 12
Model instruments
5 August 2015 Deltares - Pro-Tide workshop 12
SLIDE 13