Thursday, 29 November 2012
MIKE 21 Quick Start Guide (Flexible Mesh Series)

Over the past few months, we have prepared several short instructional documents in the use of the MIKE Zero Mesh Generator, MIKE 21 FMHD and MIKE 21 SW from a UK perspective. These instructions have been collated into the informal working document 'MIKE 21 Quick Start Guide' below: -


We have been working hard to enhance our User Manuals and Scientific Documentation. For example, the above informal guide can be augmented by our new Mesh Generator Step-by-step Guide (2012): -


How to Create a Directional Wave Spectrum for Input to MIKE 21 SW from Buoy Data

In order to make best use of the new Wave Spectra Converter tool available in Release 2012, some pre-processing of wave buoy data is generally required. In response to a number of recent enquiries, we have prepared the following informal guidance: -


Oil Spill Modelling

It is important to note that the methodologies of the old and new oil spill models in MIKE 21/3 are very different, and a direct comparison is difficult. However, in order to provide some basic guidance, we have developed the following comparison document and associated example models (provided here for information and discussion only): -



Sunday, 25 November 2012
Australian Rainfall and Runoff 2012 (AR&R) Guidelines Launched: Two Dimensional Modelling in Urban and Rural floodplains

Engineers Australia has published new guidelines on Two Dimensional Modelling in Urban and Rural Floodplains. The guidelines have been prepared for the National Committee on Water Engineering as one of the Australian Rainfall and Runoff Revision Projects.

The Guidelines review current practice in 2D modelling, including areas where current practice is not supported by theoretical and empirical research, and provide guidance on appropriate development and usage of 2D hydrodynamic models for floodplain applications.

While tailored to Australian flood risk legislation, UK users of MIKE FLOOD may find the report of interest (particularly, for instance, the sections on building representation and the use of eddy viscosity in 2D inundation models).

The report builds in part upon the research undertaken by Grantley Smith (University of Newcastle, NSW) on 2D Flood Modelling in Urban Areas (specifically in Merewether; a suburb of Newcastle, New South Wales) which he presented at the 2012 UK User Group Meeting.


Monday, 19 November 2012
Top award for Managed Aquifer Recharge (MAR) Scheme using FEFLOW

The Fortescue Metals Group (FMG) recently won top honours at the International Water Association’s prestigious Project Innovation Awards at the World Water Congress in Korea. The prize was awarded for an innovative Managed Aquifer Recharge (MAR) scheme at Fortescue’s Cloudbreak and Christmas Creek iron ore mines in the Pilbara region of Western Australia. DHI provided assistance to FMG in the design and development of high-spatial-resolution groundwater models using FEFLOW for this project.

The MAR scheme mitigates environmental impact of surface discharge and dewatering drawdown and conserves brackish water resources for future mine water supply. The mine operations are bounded on the south by the Fortescue Marsh, an ephemeral wetland of national significance that is underlain by hypersaline groundwater. The project is one of the largest MAR schemes in Australia and is the first of its kind in highly saline groundwater.

Figure: A Simplified Schematic of The Cloudbreak Managed Aquifer Recharge (MAR) scheme

The MAR scheme is part of the mine dewatering operation. The scheme allows FMG to pump almost 75% of the extracted water back into the local groundwater system instead discharging it to streams, where it would be largely lost to evaporation in the arid climate. The current operation has been operating as a sustainable ‘closed’ system with zero surface discharge since September 2009. The FEFLOW models enable FMG to predict the movement of the saline/brackish groundwater interface in response to different operating conditions. The models also help forecast the quantity and salinity of groundwater extracted under different mine plans. The current 40-gigalitre/year operation may grow to over 100 gigalitre/year as the Cloudbreak mine expands and the Christmas Creek mine comes on-line.

The Fortescue project showcases how Managed Aquifer Recharge, together with FEFLOW, can be used to meet a range of objectives in a complex environment, including coast aquifers. MAR is relevant in many environments, and is likely to be increasingly used at mine sites around the world facing varied and difficult water management challenges.

For more information please contact Stefan Paul Szylkarski at sps@dhigroup.com

Sunday, 18 November 2012
Transforming abandoned mining pits into new lake districts

The mining industry can have severe consequences for regions and the surrounding landscape, impacting vegetation and wildlife negatively when mining production is abandoned. Rehabilitating old mining areas can be a highly difficult challenge and few succeed.

However, with the right strategies and tools available, abandoned mining pits can be turned from lifeless landscapes into prosperous manmade lake districts. This is what has been done in Eastern Germany, where DHI-WASY was able to provide accurate analysis and the right strategies for creating a new lake. For this purpose, integrated groundwater modelling was essential using among other products FEFLOW 6.1 and MIKE 11.

Click here to read more.

Read the full November 2012 Edition of the MIKE by DHI NetWork newsletter here.

Dynamic response of floating offshore wind turbines



As a member of the HYDRALAB-IV consortium, we offer access to research groups to conduct experimental studies in our wave basins. One of the projects selected by HYDRALAB's user selection panel for Transnational Access to our facilities concerns 'Dynamic Response of Floating offshore Structures under Random Waves and Wind Action'.

Other recent DHI news stories

Wednesday, 14 November 2012
MIKE by DHI 2012 – software for WATER ENVIRONMENTS

We are pleased to announce that the MIKE by DHI 2012 software package is officially released!

The 2012 version offers new important features and significant performance improvements, which increase speed and productivity significantly and allow you to handle much larger amounts of data in an efficient manner. This provides many new possibilities and facilitates the work of practitioners and decision makers around the world even further.

MIKE by DHI covers the entire water environments cycle in a highly integrated manner and with more features than ever before. Whether you are working within marine, ports and coasts, water resource management, rivers, flooding, urban, groundwater, wastewater or integrated modelling, MIKE by DHI 2012 is tailored for your modelling needs.

Now, with release 2012, running models and simulations with MIKE by DHI software has become even more efficient allowing you to work faster and with much more comprehensive and complex models than ever before. To mention a few highlights of the many improvements, we are proud to introduce high performance computing (HPC), where you can get access to high performance versions of the FM series as well as remote execution in order to avoid large models monopolising your local PC. Getting access to MIKE software has never been easier, and with MIKE by DHI in the cloud and high performance computing versions available, large and complex simulations will never again be an obstacle to reach the best possible results.

Furthermore, when dealing with climate change adaptation, two important improvements have been made, which are the inclusion of Sea Level Changes and the support of 2D data files in the Climate Change tool. Climate change adaption continues to play a major role and will impact us through water first, and with these new features it is even easier to be prepared.

For more information about the many new features of this release, read more here or check out our new online catalogue here.

Check out the new release here and discover what MIKE by DHI 2012 can do for you.

MIKE by DHI Frequently Asked Questions

Our online Frequently Asked Questions (FAQ) page has now been updated with information relevant to Release 2012. The FAQ page can be accessed at faq.dhigroup.com, and links to the most recent posts are presented below: -

Generic
MIKE 21
LITPACK
MIKE 11
MIKE FLOOD
MIKE HYDRO Basin
Congratulations to Plymouth University on the official opening of its new Marine Building

Plymouth University's new £19 million state-of-the-art Marine Building was officially opened by HRH Prince Philip The Duke of Edinburgh on 30 October 2012. The facility is currently thought to house the UK's most sophisticated wave energy testing tank which will enable developers to test wave energy devices (using waves, currents and wind) prior to linking up to the Wave Hub – a grid-connected test site about 10 miles off the coast at Hayle in Cornwall.

More details can be found via the links below: -
Sound-Wave

To celebrate the opening of its new Marine Building the University commissioned Alexis Kirke and Sam Freeman to create and perform a unique musical composition for large-scale wave tank, water drummers and electronics. The piece, Sound-Wave, is thought to be the first time a wave tank has been turned into a musical instrument.



Alexis Kirke, with sensors strapped to his body, conducted the 12-minute symphony of waves and music from a position above the main tank. Water drummers (Josie Boucharde, Philip J. Kendall, Magdalena Walker and Jennie Pinhey) provided percussion in the nearby coastal tank. Visit Alexis Kirke's web page to see how it was done.

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Welcome to DHI UK

DHI is an independent, international consulting and research organisation with the global objective of advancing technological development and competence with respect to water, in all of its environments.

Worldwide, we offer a wide range of consulting services and leading edge technologies, software tools, environmental laboratories, and physical model test facilities, as well as field surveys and monitoring programmes. Designated as a not-for-profit organisation, DHI is able to invest a considerable portion of its resources in research and development. Today we co-operate with many Universities, and research organisations, and are recognised globally for our innovation and expertise.

In the UK, DHI offers niche or specialist consultancy services in the water and environment market to government agencies, commercial entities and selected research organisations. We fulfil a research based specialist advisor role; a ‘Consultant to the Consultants’. We also supply and support the renowned MIKE by DHI suite of integrated water modelling tools.

MIKE by DHI software is the result of years of experience and dedicated development and has, in many regions, become the standard modelling tool. It transforms our science into practice and gives you the competitive edge and, through the DHI Academy, you can rest assured that there is a local team of highly skilled experts committed to train and support you every step of the way.

MIKE by DHI truly models the world of water - from mountain streams to the ocean and from drinking water to treatment plant and beyond.

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