This presentation provide general information about Deltares activities in offshore wind. For more detailed information please contact me directly: janjoost.schouten@deltares.nl Kind regards, Jan-Joost Schouten Senior Project Manager Offshore Deltares

1. July 21, 2014
Deltares & Offshore Wind Energy
Jan-Joost Schouten
Senior Project Manager Offshore
Deltares

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Deltares movie

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Independent institute
Deltares is an independent institute that provides a high
standard of expertise and advice.
We work closely with governments, businesses, universities
and research institutes in The Netherlands and abroad.

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Mission Statement
Developing and applying top level expertise in the
area of water, subsurface and infrastructure for
people, planet and prosperity.

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Facts and figures
• Legal form: foundation under Dutch
law
• 840 employees
• Annual turnover 113 mln euro
• Locations in Delft and Utrecht
• Nationally and internationally active
• Unique experimental facilities

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Sharing knowledge
• (Open source) software
• Publications, data and models
• Deltares Academy, workshops, conferences
• (Research) projects
• PhD-students, trainees, graduates

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Excellent expertise
1000039.005

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Organization chart
•Environmental legislation & marine spatial planning
•Ecological impacts & risks
•Hydrodynamic & morphological impacts
•Environmental legislation
•Marine spatial planning
•Metocean (design) conditions
•Wave impact and wave runup
•Hydrodynamic & morphological impacts
•Scour and morphology
•Seabed morphodynamics
•Geotechnics of
foundations and cables•Seabed morphodynamics
Organization chart & Offshore Wind

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Deltares capabilities in offshore wind
•Metocean conditions
•Scour and morphology
•Geotechnics
•Seabed morphodynamics
•Marine spatial planning & environmental legislation
•Ecological impacts & risks
•Hydrodynamic & morphological impacts

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Deltares capability metocean
•Metocean
> Normal and extreme conditions
> Data analysis tool - ORCA
> Statistics for the design basis
> Numerical modelling of waves,
currents and water levels
> Weather window analysis for marine
installations
> Operational forecasting & logistics

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Deltares capability Scour 1
•Offshore scour
> Scour prediction
> Conceptual layout of scour protection
> Optimisation by physical modelling
> Evaluation of field data

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Deltares capability Scour 2
•Example of physical model test: transparent pile with camera
before
after
current

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Deltares capability Scour 3/3
•Systematic scour research
> Example: JIP OSCAR
> Objective: investigate scour at jack-up foundations
> Systematic physical model tests for three spudcan types
> Test database → scour formulae → software
> PC tool OSCAR the scour manager
– Scour assessments / forecasting
– Design of scour protection
> Field validation

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Deltares capability geo engineering 1/2
• Geotechnics
• Site investigation and laboratory testing (speciality
cyclic loading)
• Foundation design (e.g. monopiles, GBS, suction
piles)
• Installation (e.g. spudcan penetration, boring process)
• Geohazards (e.g. earthquake)
• Tools:
> Geotechnical centrifuge
> Numerical models
> Own software (e.g. D-Pile & D-Cycle)

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Deltares capability geo engineering 2/2
• Cables
• Trenching
• Rock protection (anchors & fishing equipment)
• Shore connection (horizontal directional drilling)

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Deltares capability engineering geology
• Sea bed morphodynamics
• Analysis of sea bed morphodynamics
• Morphodynamics
• Offshore geophysical surveys
• Monitoring using Fiber-optic cables
• R&D
• Research on numerical tool Delft3D

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Marine bedforms
Obj. 1:
Morfodynamiek
bathymetrie NCP
zandbanken
zandgolven

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DTS: Monitoring sediment transport
1. Continuous monitoring of erosion and deposition with
temperature measurements (Kornwerderzand)
2. The aquifer thermal energy storage project (Utrecht)
3. Sand suppletion, offshore Workum (Friesland)

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•Sand suppletion, offshore Workum (Friesland)
•Fiber-optic DTS (Digital Temperature Sensing)
•Temperature measurements <0.1ºC resolution, spatial resolution <1 meter
DTS: Monitoring morphodynamics I

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•The fibre-optic DTS measurements clearly reflect the position of the nourishment and sandbars
•changes in morphology of the nourishment can be deduced from the temperature signal
DTS: Monitoring morphodynamics II

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Deltares capability summary
Conclusions:
• Wide range of applications to support the industry
• (inter)national consultancy & research projects
• Identification of research topics
• Joint Industry Projects
• EU projects
• Policy: dare to share

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Deltares capability
• Environmental legislation & marine
spatial planning
• Ecological impacts & risks
• Hydrodynamic & morphological
impacts

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Deltares capability Scour IV
•Scour protection alternatives
> Loose rock
> Block mattresses
> Frond mats
> Collars
> Rubber mats
rubber mat collar
artificial fronds
block mattresses
loose rock

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Processing of scour development
0
2
4
6
8
10
12
14
0 1000 2000 3000 4000 5000 6000 7000 8000
time [s]
scourdepth[cm]
Tchar
S/Seq=63%
tend
• Seq = equilibrium scour depth
• Tchar = characteristic time scale
• t0 = time delay (collar tests)sand-water interface
pile

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Deltares capability Offshore Wind
•Metocean
•Scour and morphology
•Wave runup
•Geotechnics
•Seabed morphodynamics
•Environmental legislation & marine spatial planning
•Ecological impacts & risks
•Hydrodynamic & morphological impacts

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Metocean Database ADMA-OPCO
Metocean database
• for the oil fields offshore Abu Dhabi
• for design and planning offshore activities
• includes all relevant metocean parameters
• both normal and extreme conditions
(waves, wind, current, water levels)