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Waterloopkundig Laboratorium

Datum nieuwsfeit: 24-11-2001
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Bron: Razende Robot Reporter
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Waterloopkundig Laboratorium

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Up One Level

News from the past year

WL | Delft Hydraulics in kinderprogramma

5 November, 2001
Op 24 november 2001 om 08.25 uur is het zover. Dan speelt WL de hoofdrol in een aflevering van het kinderprogramma ZigZag. In het model van de haven van Hamburg, op de Baggergoot en bij het Stromingslab werden opdrachten uitgevoerd door een school uit Schiedam en een school uit Schipluiden.

Zig Zag werd in juni 2001 op het WL-terrein opgenomen, onder warme belangstelling van de Delftse pers en de werknemers van WL

Hydraulic design advice attractions Zoo Emmen

1 November, 2001
Zoo Emmen expands its attractions by creating a new natural accomodation for the Humboldt penguins, with beaches, currents, waves, rock formations and a large glass wall for underwater viewing. In order to achieve an optimal three-dimensional circulation flow pattern, realising sufficient and evenly distributed water purification in all parts of the basin, WL | Delft Hydraulics advised about location, direction and number of water in- and outlets, nozzles and skimmers. All based on the tank lay-out as designed by the British architect and the flow rates advised by the biologic water treatment specialist. Earlier this year a similar advice study was performed by WL | Delft Hydraulics for the new Biochron 5 m deep shark tank, with a curved vertical glass wall over the full height. After realisation of the tank and filling it with sea water, the pump and water jet systems were installed and tested. Flow velocities were measured and confirmed the designed vertical circulation flow. After the instruments were rescued, the 3 m large sharks were moved safely into their new territory
Contact: (

WL | Delft Hydraulics studies salt water intrusion through locks of Panama Canal

23 October, 2001
Autoridad del Canal de Panamá (ACP) has awarded WL | Delft Hydraulics a contract for the study of salt water intrusion through the locks of the Panama Canal. The issue of salt water intrusion is a very important environmental concern and is becoming more important presently in view of a long-range master plan, that is being developed by the ACP to augment the capacity of the Panama Canal. The construction of new, larger locks with sizes which enable the transit of so-called Post-Panamax vessels, forms a part of this plan. The analysis of salt water intrusion through the locks comprises a study of the present situation, in situ measurement, the development of a numerical model, verification of this model for the present locks, and finally the prediction of the salt water intrusion for two different new lock configurations. The study will be undertaken in the years 2001-2002.
Contact: (

WL | Delft Hydraulics tijdens waterbouwdag

9 October, 2001
WL | Delft Hydraulics presenteert zich op 11 oktober 2001 op de tentoonstelling tijdens de waterbouwdag 2001.
U kunt WL | Delft Hydraulics vinden in Alpheusdal, Zaal Zeus, Filip Williotstraat 22, stand nummer 10. De waterbouwdag 2001 wordt dit jaar in Berchem (Antwerpen) gehouden.

new product manager Delft3D

25 September, 2001
By the end of September Gerrit Verboom, our account manager for all matters related to Delft3D, will leave WL | Delft Hydraulics after almost 30 years.

It is a pleasure to introduce to you Mr. Deepak Vatvani, who will be the new Delft3D Product Manager, starting 1 September last. Mr. Vatvani was already Delft3D Product Manager before he went to India to manage a large Delft3D-project concerning an operational typhoon early warning system. With much confidence we can say that Mr. Vatvani is well known with Delft3D and all matters related to delivering software and supporting your needs

elaboration of preferred alternatives for restructuring of Mark-Vliet

11 September, 2001
WL | Delft Hydraulics has won an assignment of the Waterboard of West-Brabant concerning the "Elaboration of preferred alternatives for the restructuring of the Mark-Vliet water system". This restructuring becomes necessary, when present concepts for the restructuring of the southern delta of the rivers Rhine and Meuse will be implemented. The water levels and the water quality of Lake Volkerak-Zoom as part of this Delta may change because of the reintroduction of constrained tides and the storage of water during extremely high river discharges. The watersystem of the rivers Mark and Vliet will need to be restructured in order to arrive at a durable water system. Options therefore concern among other things the reestablishment of open connections between the river, bosom parts and former creeks. WL | Delft Hydraulics will study all relevant aspects, including safety (flooding), infrastructure (dikes, sluices, costs), agriculture, shipping, ecology, water quality, drying out of land, hydrology, river discharge and morphology. The assignment will be carried out in close cooperation with the project committee of the client.
Contact: (

WL | Delft Hydraulics at international congress coastlines, structures and breakwaters in London

10 September, 2001
At the international congress Coastlines, Structures and Breakwaters 2001, London (September 26-28) WL | Delft Hydraulics' specialists will participate and present the following paper:

Rubble mound breakwaters: Single armour layers and high-density concrete units Marcel R.A. van Gent, Kees d' Angremond and Roelof Triemstra

At the international congress Waves 2001, San Francisco (September 2-6) WL | Delft Hydraulics' specialists participated and presented the following papers:

Flexible Boundary Conditions for a Boussinesq-Type Wave Model Mart Borsboom, Jacco Groeneweg, Neelke Doorn, Marcel van Gent High-Quality Laboratory Wave Generation for Flumes and Basins A.R. van Dongeren, H.A.H. Petit, G. Klopman, A.J.H.M. Reniers Video Observations of Laboratory Waves
I.J.P. Elshoff, A.R. van Dongeren, T.T. Janssen Field measurements and laboratory investigations on wave propagation and wave run-up
Marcel R.A. van Gent, Arno C. de Kruif, Jimmy Murphy Contact: (

Discharge capacity of the Rhine Branches

6 August, 2001
The design discharge for the Rhine River is expected to increase in the future due to climatic change. Maintaining river flooding safety levels by means of increasing dike heights is by now considered a last resort option in The Netherland. Instead, the preferred measures provide more room for the river, and include setting back dikes, construction of detention ponds and so called green rivers (diversions), removal of hydraulic obstacles, excavation of flood-plains, etc.

In case the long-term design discharge increases, substantial parts of the area currently protected by dikes will have to ?given back? to the river in the form of detention basins, setting back levees, or diversions. Given intensive land-use in The Netherlands, a densily populated country, this suggests the strategy to implement such measures at the shortest possible term. This in order to avoid the situation that in the future - when such measures are really required
- such areas have become urbanized, in wich case giving the land back to the river is practically impossible.

A large study is currently executed by WL | Delft Hydraulics and RIZA to assess the feasibility of measures that are required in the future, and the associated distribution of flood flows over the various branches of the Rhine River in The Netherlands. Contact: (

flood risk seminar

1 August, 2001
WL | Delft Hydraulics is organising an interdisciplinary seminar on the regional implications of modern flood management October 11, 2001. The programme for this seminar is now available. Also, it is still possible to register for this seminar.
More information
Contact: (

WL | Delft Hydraulics takes the lead in two projects on Multiple Spatial Planning

17 July, 2001
Water needs more space and space is scarce. As a result of recent Dutch policy changes, water will play a more central role in spatial planning in 21st century Netherlands. To find ways of combining different forms of land use - multiple spatial planning - is a challenge. In the province of North Holland pilot projects will be developed. Whether the need to find space for water detention or conservation may be combined with other uses (e.g. agriculture, housing, and nature) remains to be seen. To investigate this, the Province has initiated a research programme (in Dutch: `Meervoudig ruimtegebruik met waterberging in Noord-Holland'). WL | Delft Hydraulics has the lead in two projects within this programme: "water wilderness" and "exciting water" and is involved in a third one: "blue contours".
More information (in Dutch)
Contact: (

WL | Delft Hydraulics Palm Islands project in Dubai

9 July, 2001
WL | Delft Hydraulics has been awarded the physical and mathematical model studies for the massive Palm Islands project on the Dubai coast. The two islands - each in the form a palm tree with diameter of about 5km - are being investigated for Palm Island Development Company of Dubai. The islands will house 2000 luxury villas, 40 hotels, floating marinas and much more. Press releases claim that the islands will rank with the Great Wall of China as being the most prominent man-made structures visible from the moon!

Mathematical model studies at Delft, using our Delft3D (flow, water quality and morphology) and UNIBEST-CL + modelling packages are being conducted to advise on the flushing characteristics of the new schemes, their impacts on the coastline and seabed. Physical model studies are focussing on the testing of the cross-section of the huge crescent shaped breakwater that protects each island from wave disturbance. The physical modelling is being conducted in the Schelde Flume facility where we are modelling the impact of severe "Shamal" storms. The luxury villas and water fronts on the sheltered "leaves" of the Palm trees will require that a high standard of protection by the outer crescent breakwater is required, even in severe conditions.

Construction of the first island is due to begin in the autumn of 2001 and contractors have been appointed for both islands. The modelling efforts in Delft are focussed within our Harbours and Offshore Technology group but to conduct the complex modelling on a tight timescale required for the design, with contractors standing by, we are calling upon the technology and resources of many parts of the company in a team effort. Next time you are on the moon, take a look....and think of WL | Delft Hydraulics !
Contact: (

Vietnam Integrated Coastal Zone Management - kick-off workshops in Hue and Hanoi

9 July, 2001
WL | Delft Hydraulics is working in the Nedeco Consortium as a major player in assisting the Government of Vietnam to implement concepts of Integrated Coastal Zone Management (ICZM). In June 2001 kick-off workshops to announce and discuss the project have been held in Hue and Hanoi with almost 200 attendees.

The project, funded by the Royal Netherlands Embassy in Hanoi, involves a 3 year project within which a framework plan will be developed with Vietnamese counterparts leading to development of practical and appropriate ICZM strategies and action plans in Vietnam at Government level and at local level in Districts and Provinces. The Vietnamese host for the project is the Ministry of Science Technology and Environment (MOSTE) acting via its National Environment Agency (NEA). In Hanoi and in 3 coastal provinces, the project has established offices which are being used to manage the project and act as new national and international focal points for coastal zone management advice and technology. Institutional strengthening is being provided to NEA and MOSTE such that the ICZM focal points can be sustained in future decades and so that MOSTE can play its role in assisting and facilitating the coastal provinces with their the integrated approach to solving coastal problems and development conflicts in the coastal zone. Pilot projects are underway in three provinces (Nam Dinh, Thua Thien Hue and Baria Vung Tau) where grass-roots awareness building and strategy planning are being stimulated at the level of communes and districts with the support of Provincial Peoples Committees. Training is being conducted in Vietnam, in Manila and in the Netherlands. The project is acting upon recommendations of earlier work such as the ADB REG 5712 and the current UNEP/IMO integrated coastal project of the South East Asian Seas Programme.

Two other major projects in which WL | Delft Hydraulics is participating in Vietnam are a storm surge modelling project (for the Hydrometeorological Service of Vietnam using our Delft3D modelling package to increase capabilities of storm surge predictions and response times) and the setting-up of the new Faculty for Coastal Engineering at the Hanoi Water Resources University (a project led by the Technical University of Delft).

The Nedeco Consortium which is conducting the Vietnam Netherlands ICZM Project comprises a lead role by Haskoning Consulting Engineers, technical project management by WL | Delft Hydraulics and shared inputs from WL | Delft Hydraulics and DHV Consultants for technical advice. IHE of Delft is participating in the training tasks. SNV (Stichting Nederlandse Vrijwilligers) and the Netherlands Ministry of Transport and Water Management via its Coastal Zone Management Centre within RIKZ (Rijks Instituut voor Kust en Zee) is providing parallel assistance mainly in the Hue Pilot Study.

For further information refer to the project web-site set-up by the Vietnamese counterparts.
More information
Contact: (

WL | Delft Hydraulics co-operates with Danube Delta National Institute Tulcea, Romania

25 June, 2001
Between June 10 and June 15 Mr. Siebe Bosch and Mr. Erik Ruijgh of WL | Delft Hydraulics visited the Danube Delta National Institute (DDNI) in Tulcea, Romania. This was the first visit of WL | Delft Hydraulics employees in a project commisioned by the Ministry of Transport and Public Works of the Netherlands (RIZA) to Romania. The main purpose of the project is to assist DDNI in modelling the water quality of the Lower Danube and the Danube Delta.

Modelling the water quality in the Lower Danube is the main task of DDNI in the DANUBS project. Mr. Adrian Constantinescu of DDNU will be working on the project during the rest of the year. To support him in his work, the present SOBEK-version in the institute was updated to enable him to include the water quality module. DDNI is focussing its work on the Danube Delta. Several ongoing projects include the study of the water quality in different types of lakes in the Danube Delta, as well as the hydrology of the reedbeds. The updated version of SOBEK enables DDNI to include the water quality in the calculations for the Delta. In September - October a second visit is planned to DNNI by Mr. Ronald Bakkum of WL | Delft Hydraulics. Mr Ronald Bakkum is a water quality modelling expert, experienced in using the SOBEK water quality module. Mr. Bakkum will further assist DDNI in their modelling activities. Several DDNI employees will visit the Netherlands subsequently, for further exchange of knowledge on water quality modelling. Contact: (

WL | Delft Hydraulics genomineerd

21 May, 2001
Tijdens de nationale netwerkdag van het Kennisnetwerk CUR op 10 mei 2001, heeft OSCUR Panel Voorzitter Hans van der Vlist de namen bekendgemaakt van de vijf teams die mogen meedingen naar de Morgen de Ruimte Prijs 2002.

WL | Delft Hydraulics is een van de genomineerden, met het voorstel 'Water voor Ruimte'.
More information (in Dutch)
Contact: (

WL | Delft Hydraulics coordinator of HABES project

17 May, 2001
WL|Delft Hydraulics is coordinator of the HABES (Harmful Algal Bloom Expert System) project, which is funded by the European Commission under the Fifth Framework Programme. The inter-disciplinary research project, carried out by 13 European research organisations, will run for three years, starting from 1 March 2001, and aims at developing an improved understanding of harmful algal bloom formation by bringing together a multi-disciplinary team of Europe's most prominent scientists in a network of inter-linked (pilot)projects and by giving them access to the best possible datasets.
HABES will develop an expert system, reflecting existing and newly-acquired knowledge of harmful algal blooms. The expert system, using fuzzy logic principles, will be able to identify the critical locations and periods that are susceptible to harmful algal bloom formation, focussing on the interaction between physical and ecological factors.
Contact: (

New version of SHIPMA

14 May, 2001
At this time WL | Delft Hydraulics and MARIN are working together on a new version of SHIPMA. The present version 4.30 dates back to 1991. The new version will have extended capabilities: the built in auto-pilot, steering the ship over a pre-defined track, will be upgraded to also handle swinging and reversing manoeuvres, using the ship's own manoeuvring aids (such as transverse thrusters, twin propeller/rudder configurations) and/or tug assistance.

Furthermore the user-interface will be brought up to date: the Case Management Tool (one of the components of Delft-Tools) will be used for composition of individual cases, each case being a combination of a specific ship type, a specific lay-out and specific environmental conditions (wind, waves and current). Post-processing is done using Delft-GPP, allowing (among other things) coloured plots of the sailed track and the environment (land contours, bathymetry, flow field etc.).

The release of the new version of SHIPMA is scheduled for this year. More information
Contact: (

BREAKWAT in the 21st century!

14 May, 2001
For almost 10 years now BREAKWAT (version 2.02) has been widely used as a tool to guide and assist in the design of rubble mound breakwaters. In recent years new developments have been made in wave/structure interaction formulations and more integrated design procedures are commonly applied. For these reasons we have decided to upgrade the BREAKWAT package to contain a broader range of applications and to be fully Windows compatible. The improvements included in BREAKWAT 3.00 include:

· probabilistic calculation of armour layer stability · modern design formulae for depth-limited wave height distributions, · modern design formulae for wave runup, transmission and overtopping of breakwaters and dike slopes,
· design of vertical structures,
· option to perform sensitivity analyses for user-selected parameters · improved I/O capabilities and graphics (report-ready output).

The new release of BREAKWAT 3.00 is expected to be ready around the summer of 2001.
More information
Contact: (

Wanda family grows

8 May, 2001
The Wanda family has been extended with a powerful Engineering module to support the pipeline engineer with an accurate and detailed head loss calculation of a system. This head loss calculation uses a special pipe component with a menu to specify local head losses from bends, Tees, diffusers etc. The local head losses are added to the head loss of the involved pipe. This can be specified as equivalent pipe length, or local head loss coefficients. The Engineering module further includes an easy method to calculate the system characteristics (the head loss of the system as a function of the flow rate), in combination with the pump configuration. This feature supports the engineer with the selection of the best pumps and/or pump speed(s) for different operation conditions, and to minimise (pump) investments and energy consumption. Data for pipes and pumps can be easily transferred via the clipboard from and other programs.

Wanda Engineering can be used as a stand-alone program for steady state calculations with all hydraulic components necessary for accurate head loss calculation and pump selection. Wanda Transient uses the steady state results of the Engineering module, and asks only some additional data relevant for the transient calculation. With Wanda Control the engineer can design and check the control principles of a system in a cost efficient way More information
Contact: (

Delft Waves; Coast Module first release

8 May, 2001
Delft Waves is a system of wave modules for coasts, harbours and structures. In succession of the release of the Harbour module (including pre- and postprocessing tools) last year, WL | Delft Hydraulics is now planning to release the Coast Module in 2001-2002. The Coast module consist of a) the spectral wave model SWAN including User Interface for the simulation of waves in coastal areas, b) a practical tool which allows users to determine wave climates (matrix of wave conditions), c) the Climate-Statistics package for a statistical analysis of results and d) a programme for Extreme Value Analysis of data on wind and wave climates.

Modules (a), (c) and (d) will be available during 2nd half of 2001; module (b) is planned for release in 2002.
More information
Contact: (

WL | Delft Hydraulics krijgt mega zonnecentrale (Dutch only)

23 April, 2001
Nuon zal in de tweede helft van 2001 op het dak van een van de grote onderzoekshallen van WL | Delft Hydraulics een zonnecentrale bouwen met een vermogen van 350 KW. Deze zonnecentrale wordt gerealiseerd in het kader van een Natuurstroomovereenkomst tussen WL | Delft Hydraulics en Nuon. 30% van de elektriciteitsbehoefte van WL zal door Nuon met duurzame energie worden gedekt. Ongeveer 30% daarvan wordt met zonne-energie op het dak opgewekt, het overige deel wekt Nuon op met zon, wind of water elders in Nederland.
Contact: (

WL | Delft Hydraulics Advises on Gas Problems in Minnesota

12 April, 2001
The American engineering firm Service Environmental & Engineering located in St. Paul, Minnesota has commissioned WL | Delft Hydraulics to consult on the gas problems in Stryker Bay, near Duluth, Minnesota (U.S.A.). During hot weather, methane gas bubbles are observed in the bay, accompanied by oil release, originating from sediment containing coal tar and its distillates. This results in floating oil sheans on the surface water. The escape of gas bubbles and formation of oil sheans has increased substantially in recent years. The engineering firm of Service E & E, specialized in environmental techniques, has been involved in remediation research of the contaminated sediments deposited in the floor of Stryker Bay. The formation of gas bubbles has given this research an important extra dimension, because of its apparent transport of entrained contamination.
The polluted sediment originates from 100-year-old coal gas and tar production facilities that have been decommissioned 40-50 years ago. The fact that the gas release is appearing after 100 years from the start of deposition is due to the gas accumulation capacity of the sediment.
WL | Delft Hydraulics will examine sediment samples from Stryker Bay in its experimental facilities, which have been specially designed for gas generation and gas transport in seafloor sediments such as those found in slurry depots, harbors and ocean floors. The test results will be used in the computer model DELCON, that is able to predict in time gas generation, gas transport and destabilization of the sediment such as crack- and canal formation. Both the experimental facilities and DELCON were developed in a research program, commissioned by the Dutch Ministry of Transport, Public Works and Water Management. This research program was aimed at the assessment of the long term hazard of gas accumulation and gas release in large land and marine storage facilities for contaminated mud.
Contact: (

Water Board of Rijnland decides to use Delft3D

22 March, 2001
The Water Board of Rijnland in The Netherlands has decided to use the Delft3D for the simulation of water quality effects in deep sand excavation pits and the rehabilitation of these water bodies after the exploitation phase. Rijnland as a public body issues emission permits to those parties who want to use the former excavation pits. By using Delft3D, Rijnland now has an instrument which enables the detailed analysis of water bodies under stratified conditions, which is also relevant to the ecology. Different technical rehabilition options may be evaluated with respect to their effects on the circulation, stratification and subsequent water quality and primary production effects (i.e. oxygen, BOD, phytoplankton species composition). More information
Contact: (

Manager River Engineering and Morphology Appointed

14 March, 2001
Starting March 1st, Frans C.M. van der Knaap, M.CE has been appointed as manager River Engineering and Morphology in the Inland Water Systems Division of WL | Delft Hydraulics. Frans van der Knaap takes over from Rob de Jong, M.CE, who has been appointed R&D manager starting the same date.
More information

WL | Delft Hydraulics and Kiwa N.V. sign cooperation agreement

8 March, 2001
This cooperation involves the joint development of knowledge and technology and specialist consulting for the management of the water cycle.

Delft Software Australia representative for Delft3D

7 March, 2001
Delft Software Australia was launched in February as the formal representative of WL | Delft Hydraulics in Australia for Delft3D software. Delft Software Australia is a full subsidiary of Hydrotech Inc. with offices in Brisbane (main), Sydney and Melbourne. The director, Neil Collins, and its staff have many years of experience in all aspects of software marketing, selling, after-sales and user support. With their knowledge and devotion to provide sustainable solutions and user support, Delft3D can be put much more explicitly on the Australian map.
More information

Risk Analysis of The Hague's Light-Rail Tunnel

1 March, 2001

Contact: (

Dredgebility of specific drill cuttings investigated

1 March, 2001
Two years ago, the UK offshore oil and gas industry, led by the UK Offshore Operator Association (UKOOA), launched a major research and development programme to tackle the historical legacy of accumulated drill cuttings on the sea floor beneath oil and gas installations in the North Sea. WL | Delft Hydraulics was asked to assist in these matters.

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