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Coastal structures and waves
our activities
Our specialist consultancy is based on our in-depth
knowledge o coastal processes and includes:
- design, testing and evaluation o breakwaters
- dikes (hydrodynamics, saety aspects, placed block
revetments, breaching)
- jetties (wave orces)
- probabilistic design methods
- scour and bed-protections
- wave climate in coastal regions and harbours
- wave generation in flumes and basins
- wave modelling
- interaction between waves, currents, structures and
morphodynamics.
Our experienced staff or the exeprimental acilities
(wave flumes and basins) with project-related
instrumentation is well known or their swif actions
and their capabilities to obtain reliable solutions
in an efficient way based on modelling o physical
processes on small-scale and ull-scale.
The Coastal structures and waves group focuses on research and
consultancy in the field of wave-related
issues and the conceptual design and testing of coastal
structures. The multi-disciplinairy teams tackle a
diversity of technical aspects and site specific problems. Our
effective solutions are supported by expert
opinions, mathematical tools and results from high-quality
laboratory measurements in wave flumes and
wave basins. Our clients benefit from our research that
underpins the technology which supports our advice
on wave dynamics and structures.
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Our well-established sofware products benefit
not only rom their high standards o technology
which has been demonstrated on a wide variety o
international publications and congresses, but also
rom the verification based on high-quality data-sets
rom laboratory investigations and the validation and
applications in consultancy practise.
The problem solving skills and the access to unique
tools o the Coastal structures and waves group are
direct benefits to those who receive our services and
to our partners in projects.
what we can offer
The Coastal structures and waves group provides orinstance
cost-effective hydraulic boundary conditions
or all kinds o coastal engineering issues. Feasibility
studies and independent advice on the consequences
o coastal processes or coastal inrastructure are
offered. To provide guidance to design processes use
is also made o mathematical models and hydraulic
acilities.
Our specialists have developed state-o-the-art
numerical models to solve a wide variety o coastal
engineering problems. The complexity o the problems
and the need to obtain reliable risk-assessments
stimulate our continuous efforts to develop high-
standard tools to meet the present and uture
demands o our clients.
3D numerical modelling of waves
impermeable
barrier
overtopping
container
selected
quarry run
rockrock
cubescubes
accropo
des
single
sized
armo
ur
water level
gauge
pods
tetra
existing
0.00 MSL
Wave overtopping event on grass-dike in large wave
Cross-section o breakwater rehabilitation tested by the
Coastal
structures and waves group
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Three types o laboratory acilities to assess project-
specific inormation on waves, currents and/or
morphodynamics are requently used by the Coastal
structures and waves group:
- large Wave Flume or large and ull-scale testing
- smaller Wave Flumes or small-scale testing
- multi-directional wave basin.
Our coastal acilities are equipped with second-orderwave
generation and active wave absorption. These
techniques guarantee a proper representation o
natural wave trains. Deltares (Delf Hydraulics) has
developed, made-operational and applied these
techniques in a large number o projects. They are the
first o this kind in actual operation, world-wide. We
have also implemented our techniques in a series o
new wave generators or other international research
institutes.
Rubble mound structures, caisson breakwaters, jetties,
placed block revetments, intake and outall structures,
scour, bed-protections, wavecurrent interaction, wave
propagation and penetration and wave power plants
are examples o requently studied coastal processes
and coastal inrastructure.
our clients
Our national and international clients include the
Commission o the European Union, US Office o Naval
Research, government authorities (e.g. Ministry o
Transport, Public Works and Water Management)
research institutes and private companies such asmultinationals,
international consulting engineers,
contractors and harbour authorities.
sofware systems
Deltares (Delf Hydraulics) develops, operates and
maintains a wide range o dedicated sofware packages,
reflecting the specialist knowledge which
our institute has built up over many years.
Sofware packages developed and used by the Coastal
structures and waves group are:
- BREAKWAT, or conceptual design o breakwaters.
This contains, amongst other aspects, the
hydrodynamic perormance o coastal structures
(e.g. wave run-up, wave overtopping and wave
transmission) and the structural perormance (e.g.
stability o rubble mound structures)
- ANAMOS, or conceptual design o placed block
revetments
research and development
By simultaneously carrying out applied and
undamental research, we directly link the latest
technological developments with practical knowhow.
Our position between the academic world o
undamental research and the world o pressing
practical demands enables us to unnel these
developments directly to our clients. Our research is
ofen carried out in close co-operation with private
companies, as well as educational and scientific
institutes.
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Background o the participating institutes
WL | Delf Hydraulics was actively involved with water-
related issues worldwide, whilst
GeoDelf ocused on issues in the field o geo-engineer ing.
The Subsurace and Groundwater unit o TNO
was active in groundwater management, subsurace/
soil remediation and the management and use o the
subsurace domain.
The Department o Transport, Public Works and Water
Management (Rijkswaterstaat) is engaged in providing
flood protection and saeguarding adequate supplies o
clean water or all users. Rijkswaterstaat has transerred
knowledge development or delta issues to Deltares.
For more inormation: [email protected]
Deltares is the
Dutch institute
for national and
international water and
subsurface issues
[email protected]
www.deltares.nl
- DELFT-WAVES, suite o wave models or a wide
variety o problems related to wave propagation in
coastal regions (SWAN and TRITON), wave
penetration in harbours (PHAROS and TRITON) and
wave interaction with structures (SKYLLA)
- SWAN-CLIMATE: The spectral wave model SWAN
with a package or statistical analysis o results or
wave climate studies in coastal regions
- PHAROS: Mild-slope equation model or wave
propagation o short- and long waves in harbours
- TRITON: Time-domain Boussinesq-type wave modelor applications
in coastal regions and harbours
- SKYLLA: Volume-o-Fluid Navier-Stokes model or
wave interaction with coastal structures
- DELFT-AUKE, or wave generation and wave analysis
in coastal research acilities (second-order wave
generation with active wave absorption in wave
flumes and wave basins)
- DELFT-3D, or 2D and 3D integrated modelling o
processes related to waves,currents,orphodynamics
and water quality.
Computations o waves on a oreshore in
ront o a coastal structure
Computations o wave propagation o shipinduced waves
A system o wave modules or a wide variety o wave related
coastal engineering issues
