Saturday, 14 July 2012

The latest MIKE by DHI NetWork newsletter (July 2012) has now been published. Selected highlights from this, and other recent, newsletters are presented below: -

Application Examples from Around the World
  • MIKE 3 used for innovative project at the Maspalomas desalination plant in Spain: A new and innovative project in the Canary Islands in Spain has resulted in the successful development of an effective method for reducing the environmental impact of brine discharges on marine ecosystems. In order to mitigate the impact of large spreading brine discharges from desalination plants, which affect the benthic communities at the sea bottom, a study was made at the Maspalomas desalination plant in Gran Canaria. The feasibility study focused on applying Venturi effect ejectors in brine discharges versus conventional diffusers as a mechanism to improve the dilution processes at acceptable costs for new and existing plants. DHI contributed by developing and applying numerical models for the study of the brine dispersion, including a MIKE 3 model to simulate the brine plume far field, which was calibrated using measurements from several monitoring surveys. Read more here.
  • Oil dispersion in Guanabara Bay in Rio de Janeiro, Brazil: DHI Brazil was recently requested to perform an oil dispersion modelling to support the development of an emergency plan for a port terminal in Guanabara Bay in Rio de Janeiro. As part of the emergency plan, an analysis of the effects of oil pollution incidents on the safety of life and the environment was performed, taking into account the sensitivity of the areas likely to be affected and the possibility of occurrence. The determination of these exposed areas was conducted through mathematical modelling. Thus, the hydrodynamic and oil dispersion modules of the modelling system MIKE by DHI were used to simulate different scenarios of accidental oil spills within the bay. Read more here.
  • Protection of cruise terminal in Jamaica with MIKE 21: The Falmouth Terminal on the north shore of Jamaica is used by thousands of cruise line passengers each year, but the extreme hurricane events that occur in the region each year pose a flood risk of the terminal buildings. DHI performed comprehensive research and modelling to evaluate the best way to protect the cruise terminal buildings, even during extreme hurricane events in a highly complex bathymetric setting. For this purpose MIKE 21 PMS (Parabolic mild-slope) and MIKE 21 BW (Boussinesq Wave) was used to reproduce the energy dissipation due to wave breaking as well as the wave refraction and wave diffraction. Read more here.
  • Uncertainty analysis to improve design criteria of wastewater treatment plants (WWTP): The Umbrella-DOUT initiative is a net of seven interconnected projects that aim at analysing how uncertainty is being tackled in wastewater treatment plant (WWTP) design. Design guidelines (Metcalf & Eddy, ATV, Grady, etc.) and safety factors are generally used to develop designs that ensure some effluent requirements (average ammonium below 3 mg/l; total nitrogen below 18 mg/l, etc.). Read more here.
  • Researching the Grand-Lieu Lake in France with MIKE 21: The Science University of Nantes is using MIKE 21 software for ecosystems research of the Grand-Lieu Lake in France. The natural area of the Grand-Lieu Lake is well protected, but suffers an alarming evolution including phenomena such as fast erosion of the macrophytes belt, significantly decreasing biodiversity, early blooming of cyanobacteria phytoplankton, and negative sedimentary balance. Read more here.
  • Modelling the Tohoku tsunami in Japan: One year has now passed since the tragic tsunami of 11 March 2011. Together with the Danish Authorities and especially the Royal Danish Embassy in Japan, DHI has provided assistance to Higashi Matsushima city, which is one of the hardest affected communities along the coastline of the Tohoku region. At Higashi Matsushima, the tsunami wave reached more than 10 m, propagated as far as 5 km inland, claiming at least 1039 lives of a population of 42,000, and destroyed more than 60 % of the city. Read more here.
  • Modelling the 11 April mini-tsunami in the Indian Ocean: In the afternoon of 11 April 2012, an earthquake occurred 500 km off the north-western coast of Sumatra, near the region where the devastating Indian Ocean tsunami was generated in 2004. On 11 April, the earthquake was felt strongly in Sumatra, but also in Malaysia, Singapore, and even in places like Bangladesh and the Maldives. The level of awareness was high, and shortly after the earthquake a tsunami warning was issued for the entire Indian Ocean due to a well-functioning tsunami watch, which was set into effect only seven minutes after the earthquake. Fortunately, a large tsunami did not materialise. Read more here.
Tips & Tricks
  • Plotting MIKE 21 spill levels in MIKE FLOOD: Do you know how to compare MIKE FLOOD spill levels along lateral links with MIKE 11 longitudinal profile results? If not, click here to find a tip that will guide you through it.
The latest newsletter can be viewed online here.

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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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