Joint Project between Seattle Public Utilities and King County uses MIKE URBAN for System-Wide Trunk Network Model - read press release

Associated Engineering uses MIKE URBAN to complete a complex Dual Drainage Model for the City of Calgary to identify urban drainage problems and evaluate capital improvement alternatives - read press release

The 2009 release of MIKE URBAN includes a long list of new features and improvements of existing features in the WD (Water Distribution) module. Some of these have been described in previous newsletters. Below are a few more:

MIKE URBAN: Check for pipes where the flow direction has changed

It is possible to detect pipes where the flow direction has changed during the hydraulic simulation. The same tool can also be used for detecting links and nodes, where the results (pressures, for example) changed more than a specified limit.

Example 1
In order to select (display) pipes, where the flow direction has changed during the simulation period, load the simulation results and select Tools | Select nodes and pipes where....

Illustration: Select nodes or pipes where…

Select "Link: Flow" result item from the results data type and select "Value sign (+/-) has changed" from the detection type. Define the threshold value, which is used to detect the change. Click "Select" when ready.

Illustration: Pipes where the flow direction has changed are selected from the Map

Example 2
In order to select (display) nodes, where the node pressure has changed during the simulation period more than 15metres, load the simulation results and select Tools | Select nodes and pipes where...

Illustration: Select nodes or pipes where…

Select "Node: Pressure" result item from the results data type and select "Difference between minimum and maximum value" from the detection type. Define the limit value, which is used to detect the change. Click "Select" when ready.

Illustration: Nodes where the node pressure has changed more than 15 metres are selected from the Map

For more information: p.ingeduld@dhigroup.com

"MIKE SHE was used to simulate the impact of forecast land-use changes in the Kulin catchment on surface and groundwater conditions.  In this low rainfall, data limited catchment of 50,000 ha, the model proved to be a very robust tool.  It accurately modelled observed groundwater trends and the spatial extent of shallow water tables.  Simulations were used to test a range of scenarios and community consultation undertaken using output from the model

The model, constructed by DHI, proved to be an important communication tool to both educate and change behaviour.  We look forward to developments to improve the models capacity to enable better integration of plants and their interaction with shallow water tables and runoff.

In experienced hands, MIKE-SHE is a powerful hydrological model with potential for wider application in catchment management."

Dr Richard George, Principal Research Scientist, Department of Agriculture and Food and CRC FFI Project Manager.

"The wastewater collection system we modeled includes a number of complex hydraulic conditions, with steeply sloped gravity mains, inverted siphons, intermittent force mains and many variable and constant speed pump stations. The modeling software we initially started with was simply not capable of handling these conditions and we were unable to produce reasonable results. Having used MOUSE in the past, I was confident that MIKE URBAN would be able to handle the complex hydraulic conditions in this model. Once we made the switch to MIKE URBAN (using the MOUSE numeric engine) we were able to get our model data set imported and producing reasonable results in just a couple of days. The DHI staff we dealt with were very helpful and knowledgeable, and their real-world project modeling experience provided valuable insights on improving my model setup and trouble-shooting some of the problems I ran into. We managed to successfully complete the analysis and produce a reliable and useful model for our client.  I look forward to my next opportunity to apply MIKE URBAN"

Dave Harms, BHC Consultants
Seattle, WA.

The U.S. Soil Conservation Service (SCS) Curve Number method is widely used for an approximate estimation direct runoff from rainfall events in catchments (see e.g. http://en.wikipedia.org/wiki/Runoff_curve_number). The Curve number (CN) describes the catchment characteristics in terms of soil type, land use, relief and antecedent soil moisture conditions. Based on CN, the soil retention (infiltration loss) and the direct runoff can be calculated.

When you need to analyze flooding caused by a rainfall event in areas where a certain initial infiltration loss is expected, the SCS CN method is easy and efficient to apply with MIKE FLOOD.  You will need to create 2D maps (dfs2 files) of the CN and the rainfall event (time varying), and calculate the time varying Direct Runoff for each cell. The result in the form of a new dfs2 file is then used in MIKE FLOOD as a source boundary file.

The procedures for creating and manipulating time varying dfs2 files are simple to apply, using a selection of tools available within the Toolboxes that comes with a MIKE FLOOD installation.

The steps are explained in detail in the Tips and Tricks Section on the MIKE by DHI website, see:

http://tips.dhigroup.com/default.asp?module=MIKE+FLOOD&ID=248#text

Figure: Spatial distribution of Curve Number

An improved (alternative) solution is available when using a limiting section in MIKE11 Dambreak module.

The user must activate the alternative/revised method through the MIKE11.ini file. Open the MIKE11.ini file from the \bin directory and look for the section:

;HD-Variables no 50
   ALTERNATIVELIMITINGSECTION =OFF

Changing the value of this parameter to
"ALTERNATIVELIMITINGSECTION =ON" will activate the new method.

A related feature is a new diagnostic to assist with visualisation of the limiting section. The user can place an empty text file in the same directory as the simulation (sim11) file with the name "DBFinalCrosssection.txt". This file will be populated with raw data of the final dambreach-profile, which can be imported into a cross section file.

The alternative limiting section solution will become the default method in the next Service Pack (October), with the ability to switch back to the current method in the INI file if required.

Please note: the alternative solution for limiting section can result in adverse results in some applications.

Every year hundreds of current and future MIKE software users meet around the globe at one of our regional or national conferences, user group meetings, road shows; streamline seminars, round tables or workshops. Please visit our DHI Global Event Calendar, which always keep you updated on upcoming events. If you do not find what you are looking for please contact your local DHI office which will tell you when and where the next MIKE User Group Meeting or Conference will take place in your country or region.

Annual User Group Meeting – California
21 September 2009, San Diego, California, US
For further information please contact Ms. Barbara White, DHI Canada, or visit the User Group Meeting website.

11th User Group Meeting & Training Sessions - United Kingdom
30 September -1 October 2009, Lion Quays, Oswestry, Shropshire, England
For further details please contact Mr Simon Matthews, DHI UK or visit the UK User Group Meeting website

3rd User Conference - Italy
6-7 October, Torino, Italy
For further information please contact Ms Birnur Yavuz, DHI Italy.visit the Conference website

13th User Conference - Japan
7-8 October, Tokyo, Japan
For further information please contact Mr Francois Salesse, DHI Japan

MIKE by DHI News & Views 2009 Seminar - Finland
9 October, Helsinki, Finland
For further information please contact Jari Silander DHI - Finland

FEFLOW Seminar - Canada
2 November, Cambridge, ON, Canada
For further information please contact Ms Barbara White, DHI Canada

MIKE by DHI User Group Meeting - Vietnam
3 November, Ho Chi Minh, Vietnam
For further information please contact Henrik Bundgaard, DHI DK  or Tran Thi Hong Hanh  DHI Vietnam.

MIKE by DHI User Group Meeting - Vietnam
5 November, Hanoi, Vietnam
For further information please contact Henrik Bundgaard, DHI DK or Tran Thi Hong Hanh DHI Vietnam.

FEFLOW Seminar - Colerado
9 November, Golden, Colerado, US
For further information please contact Ms Barbara White, DHI Canada

3rd MIKE by DHI User Group Meeting - Argentina
17 November, Buenos Aires
For further information please contact Bo Mogensen or local DHI agent Martin Marrazi

1st  MIKE by DHI User Group Meeting - Uruguay
18 November, Montevideo
For further information please contact Bo Mogensen or local DHI agent Martin Marrazi

International MIKE by DHI Conference 2010 - "Modelling in a World of Change",
6-8 September 2010, Copenhagen, Denmark

We aim to bring together our entire global MIKE by DHI user community and all interested modellers from all over the world in order to discuss past experiences and future challenges of modelling in a changing world.

Setting the framework:
Dr Michael Abbott
Key Note Speaker

"Past Experiences and Future Development of Numerical Modelling in
 A Changing and Challenging World"

We have now opened our "Call for Papers". For further details (deadlines, conference fees, etc) please download Conference Flyer here, contact the Conference Secretariat or visit the Conference website, which is updated regularly with new information about the Conference.

6th Asia-Pacific MIKE Software Conference, 12-13 October 2009, Singapore

The 6th Asia-Pacific MIKE Software Conference is coming up soon. You still have a chance to register and attend the conference.

Held in Singapore, the conference aims to create a truly international environment and venue for learning about the latest releases, future directions of our MIKE Software and research & development in general.

The conference topics will follow the trends of the world and include:

• Sustainable Development
• Climate Change
• Ecology
• Flooding
• Decision Support Systems
• Urban Water
• Water Resources
• Coasts and Seas

SIGSA-ESRI National User Conference, Mexico City, 2-4 September 2009.

In connection with the annual GIS user conference in Mexico a workshop on water modelling and mapping took place in which local MIKE by DHI users gave examples of their model applications. From Comisión Federal de Electricidad (CFE) Carla Alejandra Rivera Ramirez presented a case from Rio Mezcalpa, where MIKE 21C is used to design and optimize river bank protections and her colleague Alejandro Lara Hernández showed a case from Laguna de Cuyutlán. Alejandro is using MIKE 21 HD & ECO Lab to study possible effects of a considered channel deepening on the water quality in the lagoon. Bernardo Echavarria Soto, EFE Asesores, shared his 10 years experiences in using MOUSE for modelling of the drainage system in Mexico City. Daniel Ortega Covarrubias, SIGSA, have used MIKE Flood to analyse the flooding risk in Tlaltenango Zac.  Read more about this including the MIKE URBAN training course held prior to the conference, here.

Every year more than 2,500 current and future users attend our global MIKE software training and courses. Participants come from governmental agencies, regional and local water bodies, research institutions and universities, professional bodies and engineering companies, urban water utilities, coastal and harbour authorities.

The following training schemes are offered:

• Public standard courses
  Our standard courses are modular and allow you to build your expertise so as to match the requirements of your job. Likewise, they assist you in expanding/upgrading your team's productivity, modelling skills and expertise in a quick, efficient and cost-effective way.
• Tailored courses
  Our customised courses are based upon your own data and range from short courses to longer, specialised training packages. These courses are typically offered at your own premises.
• Online webinars
  Webinars give you an overview of the basic features of our MIKE by DHI tools.

Further information
Our Global Course Calendar always tells you when, where and which courses are offered in your country or region. You are also welcome to contact our International Course Secretariat

We are pleased to announce our Global Software Training Calendar for 2009.

Should the training course of your interest not be on the list, please feel free to contact our International Course Secretariat at DHI in Denmark or your local DHI office.