MIKE by DHI UK and Ireland Blog

Previews of MIKE by DHI Release 2012

We are gradually approaching the release of the MIKE by DHI software package 2012, which is scheduled for this October. As in previous issues of our newsletter, we would like to disclose a preview of the many new and exciting features, which we hope will improve your experience when using the software products, both with regard to usability, productivity, and enhanced applications.

MIKE 21: Earthquake bathymetry adjustment tool

In version 2012, a new tool that can assist undertaking of Tsunami-simulations is introduced: earthquake bathymetry adjustment tool. For several years, it has been possible to work with time varying bathymetries (using the landslide option) in MIKE 21 Classic. The usability of this feature is now enhanced, as it will be easier to simulate tsunamis using the new tool. The earthquake bathymetry adjustment tool calculates sea bottom displacements that occur during an earthquake. The output is a time-varying bathymetry file, which can be used in MIKE 21 HD (classic) with the landslide option to generate wave propagation.

The method for calculation of the sea bottom displacements is an amplified version of the double-couple method developed by Okada (1985). The necessary input data for earthquakes can be retrieved from public databases. The tool is available in the MIKE 21 Toolbox in a new group called Seismology.

MIKE MARINE GIS will be discontinued

MIKE MARINE GIS will be discontinued and will not be available on the MIKE by DHI 2012 DVD. It has been evaluated that the user base for MIKE MARINE GIS was not sufficient to maintain the programme on the Esri platform. However, in version 2012, many of the tools that were previously available through MIKE MARINE GIS, have been transferred into MIKE Zero. Thus, we are enhancing the functionalities available for most users: -

• Tools for creation of transects, profiles, baselines, and coastlines are included in the bathymetry editor
• The MIKE Zero tool “Geo Referencing Image File” has been extended to read and convert Esri world format files to DHI world file format
• The MIKE2SHP tool is extended to support mesh and dfsu files

MIKE URBAN: Advisor Tools for modelling water distribution networks

The costs of pipe failures in water distribution networks are increasing and are forcing operators and utility managers to develop strategies and solutions to identify and replace critical pipes. With the upcoming release of MIKE URBAN, a new set of advisor tools will be available to support these processes.

Pipe criticality modelling will predict how the water distribution system responds to: -

• Pipe break situations
• Planned reconstructions
• Limited water supply

Sustainability analyses will help to understand simulation results and detect possible problems, anomalies, and critical areas in the network. In addition to the map layers, a detailed html report will be provided for the entire network as well as for particular zones: -

• Storage tanks: reports tanks that are either drained or overflows during the simulation, reports if the tanks are balanced within the simulation
• Pumps: reports pumps that are operated close to their maximum capacity
• Unit head loss: reports pipes with too high unit head loss
• Service pressure: reports excessive pressure that exceed the service criteria
• Pipe flow: reports reverse flow in pipes
• Flow velocity: reports excessive flow velocity

Furthermore, cost analyses allow for reviewing the energy consumption results in more details, creating tabular outputs and graphs of pump utilisation, average power consumption, and costs.
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