Wednesday, 22 June 2011
Blog Update
A new static page has been added - accessed via the top menu bar - providing full contact details for UK 'Support Desk' enquiries. Please use our new mikebydhi.uk@dhigroup.com e-mail address for all UK specific support questions. Thank you.
A new static page has been added - accessed via the top menu bar - providing full contact details for UK 'Support Desk' enquiries. Please use our new mikebydhi.uk@dhigroup.com e-mail address for all UK specific support questions. Thank you.
Note: The image here is a photograph of Smeaton's Tower, The Hoe, Plymouth, Devon, UK. For information, please see: -.
1) http://en.wikipedia.org/wiki/Smeaton's_Tower
2) www.plymouth.gov.uk/homepage/creativityandculture/museums/museumsmeatonstower.htm
Tuesday, 3 May 2011
Applications of MIKE FLOOD in the UK by Waterco
Waterco are experienced MIKE 11 and MIKE FLOOD users, and strong advocates of the MIKE by DHI suite of integrated water modelling software tools. Waterco have been successfully employing both MIKE 11 and MIKE FLOOD, for more than five years, to undertake the modelling and assessment of flood risk in England and Wales. The animations below showcase the use of MIKE Animator to effectively communicate flood risk, from a number of different sources, to both Local Planning Authority and private clients: -
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Waterco are experienced MIKE 11 and MIKE FLOOD users, and strong advocates of the MIKE by DHI suite of integrated water modelling software tools. Waterco have been successfully employing both MIKE 11 and MIKE FLOOD, for more than five years, to undertake the modelling and assessment of flood risk in England and Wales. The animations below showcase the use of MIKE Animator to effectively communicate flood risk, from a number of different sources, to both Local Planning Authority and private clients: -
- Coastal breach assessment
- Integrated 1D / 2D fluvial floodplain model
- Urban flooding due to blocked culvert
- Integrated 1D / 2D river model
- Pluvial / surface water flooding
Project animations prepared by Waterco using: -
For more information, please contact Chris Lewis at Waterco by phone on 01824 702220, e-mail Chris.Lewis@waterco.co.uk, or visit http://www.waterco.co.uk/
- MIKE 11 (Read more » )
- MIKE FLOOD (Read more » )
- MIKE Animator (Read more » )
For more information, please contact Chris Lewis at Waterco by phone on 01824 702220, e-mail Chris.Lewis@waterco.co.uk, or visit http://www.waterco.co.uk/
UPDATE: For more examples of MIKE 11, MIKE 21 and MIKE FLOOD applications please see Waterco's YouTube channel here http://www.youtube.com/WatercoLtd
Release 2011 Service Pack 3
Service Pack 3 for Release 2011 now is available. Simply download and run SP3 from here or, alternatively, via the DHI Software Updater. Please refer to the release notes for information on the corrections made in Service Packs 1-3. If you have questions, please do not hesitate to contact the DHI UK support centre at mikebydhi.uk@dhigroup.com
To download Release 2011 Service Pack 3 please click below: -
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To download Release 2011 Service Pack 3 please click below: -
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Tuesday, 12 April 2011
Blog Updates
A new static page has been added - conveniently accessed via a new top menu bar - to serve as a record of the successful 2011 DHI UK User Group Meeting. If you presented a paper at the UGM and would like to make your presentation available for download though this dedicated page, please e-mail a PDF version to sjf@dhigroup.com
'Follow me' buttons have been added to the right sidebar to enable you to join DHI on Facebook, Twitter and YouTube.
Testimonials / Success Stories
If you would like to have your MIKE project to be showcased on the Blog, and considered for inclusion on the main MIKE by DHI website as a Success Story, please contact Steve Flood on 01752 691723 or sjf@dhigroup.com
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A new static page has been added - conveniently accessed via a new top menu bar - to serve as a record of the successful 2011 DHI UK User Group Meeting. If you presented a paper at the UGM and would like to make your presentation available for download though this dedicated page, please e-mail a PDF version to sjf@dhigroup.com
'Follow me' buttons have been added to the right sidebar to enable you to join DHI on Facebook, Twitter and YouTube.
Note: The main header image is a photograph of Burrator Reservoir, Dartmoor, Devon, UK. For information, please see: -
1) www.swlakestrust.org.uk/conservation/projects/burrator-historic-and-natural-environment
2) www.plymouthdata.info/BurratorReservoir.htm
Testimonials / Success Stories
If you would like to have your MIKE project to be showcased on the Blog, and considered for inclusion on the main MIKE by DHI website as a Success Story, please contact Steve Flood on 01752 691723 or sjf@dhigroup.com
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Tuesday, 22 March 2011
A MIKE 21C Concept Demonstration: Is it Possible to Model the Impact on Flood Risk due to the Morphological and Planform Change of a River over the Lifetime of a Development?
Introduction
In the UK, flood risk and where necessary mitigation must be considered throughout the design life of the development. For the purpose of this example, a design life of 100 years (i.e. minimum lifetime of a residential development from PPS25) has been used.
The primary long term factor affecting river hydrodynamics, and flood risk, is climate change. However, the consideration of other factors may also be critical.
While it is commonplace to model the physical changes to a watercourse or flood plain as a result of urbanisation (e.g. introduction of culverts, flood defences, etc), morphological change is usually limited to the consideration of scour or silting (e.g. blockages) at structures, and to develop river maintenance schemes. Generally, for flood modelling, river bed and channel form are fixed (excepting the development of breaches).
What is MIKE 21C?
MIKE 21C is a special module of MIKE 21 based on a curvilinear (boundary-fitted) grid, which makes it suitable for detailed simulation of rivers and channels, where an accurate description of bank lines is required. MIKE21C is particular suited for river morphological studies and includes modules to describe: -
The modules can run interactively, incorporating feedback from variations in the alluvial resistance, bed topography and bank line geometry to the flow hydrodynamics and sediment transport.
Notes on the Model Set Up
Grid (see right for extract).
HD: Constant representative inflow, constant downstream water level and constant resistance (i.e. the only factor affecting hydrodynamics is morphological change).
ST: Single sediment component (grain size ~ coarse sand). Meyer-Peter and Muller transport theory employed.
Morphological Update: Single layer model (initial bathymetry comprises a uniform bed with sloping banks).
Planform: Erosion = Constant * (V – Vmean). Two eroding banks, the bank erosion model uses Erosion – Accretion = 0 (other models are available).
Model Results
Development of point bars and bend scour is clearly evident (above).
Results can be used to assess the impact on flood inundation modelling. If necessary, it is possible to ‘burn’ the original and updated channel grids into the bathymetry of a MIKE FLOOD / MIKE 21 model, in order to consider changes in flood depths and velocities in the wider floodplain. This is particularly important where water levels in the channel indicate that flood waters may find future overland flow routes that were previously dry (i.e. outflanking of existing defences).
Results can be used to inform the design of any flood defences or bank stability assessments, and to assess the effectiveness and impact of erosion control structures (hard / soft engineered) on future habitats (e.g. fish spawning grounds).
Sudden morphological change (as a result of significant flood event, dambreak, etc) is also possible.
Important considerations
Morphology introduces another level of uncertainty. The undertaking of sensitivity checks / range of scenarios is extremely important; particularly when attempting to predict long term morphological and planform change of a river.
Many more layers (representing varying soil parameters) will likely be required in the morphological model, and detailed geotechnical investigations of the bank and bed materials will be required. Such investigations should, as a minimum, be informed by river / walkover surveys.
Calibration is critical!
MIKE 21C is generally used in larger rivers (possible scaling issues).
MIKE 11 or MIKE 21 FM will be suitable for most usual riverine sediment transport applications but planform change can only be modelled using MIKE 21C.
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Introduction
In the UK, flood risk and where necessary mitigation must be considered throughout the design life of the development. For the purpose of this example, a design life of 100 years (i.e. minimum lifetime of a residential development from PPS25) has been used.
‘For practical reasons it is difficult to define the lifetime of development as each development will have different characteristics. For guidance, residential development should be considered for a minimum of 100 years, unless there is specific justification for considering a shorter period. An example of this would be if the development was controlled by a time limited planning condition.’ (PPS25 Practice Guide)
The primary long term factor affecting river hydrodynamics, and flood risk, is climate change. However, the consideration of other factors may also be critical.
While it is commonplace to model the physical changes to a watercourse or flood plain as a result of urbanisation (e.g. introduction of culverts, flood defences, etc), morphological change is usually limited to the consideration of scour or silting (e.g. blockages) at structures, and to develop river maintenance schemes. Generally, for flood modelling, river bed and channel form are fixed (excepting the development of breaches).
What is MIKE 21C?
MIKE 21C is a special module of MIKE 21 based on a curvilinear (boundary-fitted) grid, which makes it suitable for detailed simulation of rivers and channels, where an accurate description of bank lines is required. MIKE21C is particular suited for river morphological studies and includes modules to describe: -
- Flow hydrodynamics
- Helical flow (3D secondary currents)
- Sediment transport
- Alluvial resistance due to bed material and bed forms
- Scour and Deposition
- Bank erosion and planform changes
The bank erosion is computed from a formula relating near-bank conditions to bank erosion rates. The accumulated bank erosion can be used for updating the bank lines, and for updating the curvilinear grid (extent of the modelling area) at every time-step. The bank erosion products can be included in the sediment budget for the adjacent riverbed, or it can be disregarded depending on the composition of the bank material.
The modules can run interactively, incorporating feedback from variations in the alluvial resistance, bed topography and bank line geometry to the flow hydrodynamics and sediment transport.
Grid (see right for extract).
HD: Constant representative inflow, constant downstream water level and constant resistance (i.e. the only factor affecting hydrodynamics is morphological change).
ST: Single sediment component (grain size ~ coarse sand). Meyer-Peter and Muller transport theory employed.
Morphological Update: Single layer model (initial bathymetry comprises a uniform bed with sloping banks).
Planform: Erosion = Constant * (V – Vmean). Two eroding banks, the bank erosion model uses Erosion – Accretion = 0 (other models are available).
Model Results
Development of point bars and bend scour is clearly evident (above).
Results can be used to assess the impact on flood inundation modelling. If necessary, it is possible to ‘burn’ the original and updated channel grids into the bathymetry of a MIKE FLOOD / MIKE 21 model, in order to consider changes in flood depths and velocities in the wider floodplain. This is particularly important where water levels in the channel indicate that flood waters may find future overland flow routes that were previously dry (i.e. outflanking of existing defences).
Results can be used to inform the design of any flood defences or bank stability assessments, and to assess the effectiveness and impact of erosion control structures (hard / soft engineered) on future habitats (e.g. fish spawning grounds).
Sudden morphological change (as a result of significant flood event, dambreak, etc) is also possible.
Important considerations
Morphology introduces another level of uncertainty. The undertaking of sensitivity checks / range of scenarios is extremely important; particularly when attempting to predict long term morphological and planform change of a river.
Many more layers (representing varying soil parameters) will likely be required in the morphological model, and detailed geotechnical investigations of the bank and bed materials will be required. Such investigations should, as a minimum, be informed by river / walkover surveys.
Calibration is critical!
- Gauged river flows and meteorological data (for long range flow forecasting and performance monitoring)
- Historic maps & aerial photos (for preliminary assessment of river movement)
- Topographic survey data and spatial monitoring points (ongoing morphological monitoring)
MIKE 21C is generally used in larger rivers (possible scaling issues).
MIKE 11 or MIKE 21 FM will be suitable for most usual riverine sediment transport applications but planform change can only be modelled using MIKE 21C.
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Sunday, 6 March 2011
The 12th MIKE by DHI UK User Group Meeting at the Lion Quays Conference Centre
Tuesday 8th and Wednesday 9th March 2011
The User Group Meeting is now just a few days away. It is NOT too late to join us for this exciting FREE event!
The UGM is free of charge and open to both users and potential users alike. If you would like to find out what the DHI e-Community are doing, and what DHI are planning for the future, please join us on the 8th March.
There is 'something for everyone' in the Agenda.
Thursday, 17 February 2011
Release 2011
MIKE by DHI 2011 - Better than ever
The 2011 version of MIKE by DHI software is now officially released! Release 2011 is continuing our efforts toward greater usability, flexibility and seamless integration.Yet again many new important features have been added and likewise significant performance improvements have been made, which will further help our users and inevitably push the boundaries of modelling even further. Release 2011 will undoubtedly help the MIKE by DHI users win and complete even more projects successfully.
For more information - including Release flyers - please click here
To download Release 2011 please click below: -
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MIKE by DHI 2011 - Better than ever
The 2011 version of MIKE by DHI software is now officially released! Release 2011 is continuing our efforts toward greater usability, flexibility and seamless integration.Yet again many new important features have been added and likewise significant performance improvements have been made, which will further help our users and inevitably push the boundaries of modelling even further. Release 2011 will undoubtedly help the MIKE by DHI users win and complete even more projects successfully.
For more information - including Release flyers - please click here
To download Release 2011 please click below: -
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Tuesday, 8 February 2011
The 12th MIKE by DHI UK User Group Meeting at the Lion Quays Conference Centre
Tuesday 8th and Wednesday 9th March 2011
DRAFT AGENDA – UGM Tuesday 8th March
In addition to the user presentations, we will be detailing the new features and technologies available to you in MIKE by DHI Release 2011, as well as outlining our future plans for the software portfolio.
We will divide into two 'Tracks' for the different Product Area 'Technical' Sessions and re-join for a 3rd 'Common Interest' Track on Environmental Issues.
On the following 'Training Day' there is a choice of three separate Tracks with a choice of three different 'inset' sessions which can be mixed and matched according to your requirements…
Example tidal inundation model at Sutton Harbour, Plymouth using standard structures available within MIKE 21 Flexible Mesh
Introduction
The Sutton Harbour area of Plymouth is defended against tidal flooding primarily by a system of lock gates at the entrance to the inner harbour. It is understood that the defended level afforded by the lock gates is 4.03m A.O.D (although a number of openings in the parapet wall of the southern harbour wall may slightly compromise the level of defence). This example investigates the suitability of the existing defences to accommodate a 1 in 200-year tidal event plus an allowance for climate change.
LIDAR data, for use in the model, was obtained from the Channel Coastal Observatory Data Catalogue here http://www.channelcoast.org/. Downloading data and reports from the Channel Coastal Observatory Data Catalogue is currently free of charge (registration is required).
Introduction
Additional notes: It is assumed that all surface water outfalls into the inner harbour have been bypassed; hence, flooding from urban drainage has been ignored. No assessment of wave height has been included within this example. The aerial photograph above was obtained from the Channel Coastal Observatory Data Catalogue (see below).
Additional notes: CCO LIDAR data was verified by comparison with EA LIDAR data and augmented by additional depth values.
Thursday, 3 February 2011
Cities
Release 2011 of MIKE URBAN is another significant milestone. Important new features have been added that further support the work flow, increase your productivity and set new standards for what can be done in urban water modelling.
Water distribution
Release 2011 is another need-to-have release for water distribution modellers. A range of new features to enhance the usability have been implemented such as:
1 Pressure dependent demands
Traditionally, water demands are defined prior to the simulation and thus independent of the actual pressure. With Release 2011, the Wagner equation can be used to adjust the node demands based on the available pressure. This makes it possible to simulate system shutdown, maintenance and intermittent water supply systems.
2 Reliability analysis
The Reliability Analysis Tool allows you to analyse hydraulic and water quality results of any steady state or extended period analysis and to investigate the reliability in terms of exceeded maximum and/or minimum values of pressures, flows, water quality, or any other result item.
Simplification tool
The simplification tool has been enhanced to include:
Release 2011 of MIKE URBAN includes three new tools to increase your efficiency when building and maintaining models:
1 Database comparison and redoing modifications
This tool will report on differences between two MIKE URBAN databases. Records that are different will be reported as changed, deleted or added. For records which have changed, the attributes that are different will be highlighted. The differences can be saved to a file, which can be used to automatically redo the changes at a later stage, eg when redoing modifications after import.
2 Combining detailed and simplified models
This tool can be used to combine a detailed and a simplified model into a mixed model with both detailed and simplified areas.
3 Comparing results between models
With this tool you can compare two sets of model results at selected locations in batch mode.
Boundary Display in Map View
Boundary conditions are displayed in the map view including: discharge and water level boundaries in MOUSE and SWMM models, rainfall, temperature, evapotranspiration in catchments, as well as water demands in WD models.
Generic Features
Amongst the new generic features in 2011 in particular the climate change tool adds value for MIKE URBAN users. This tool provides climate model output (approved by IPCC) and applies these to make climate change assessment through automated modification of boundary conditions.
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Water distribution
Release 2011 is another need-to-have release for water distribution modellers. A range of new features to enhance the usability have been implemented such as:
1 Pressure dependent demands
Traditionally, water demands are defined prior to the simulation and thus independent of the actual pressure. With Release 2011, the Wagner equation can be used to adjust the node demands based on the available pressure. This makes it possible to simulate system shutdown, maintenance and intermittent water supply systems.
2 Reliability analysis
The Reliability Analysis Tool allows you to analyse hydraulic and water quality results of any steady state or extended period analysis and to investigate the reliability in terms of exceeded maximum and/or minimum values of pressures, flows, water quality, or any other result item.
Simplification tool
The simplification tool has been enhanced to include:
- The choice of what not to simplify
- Change in flow direction as a new pipe-merge criteria
- Easy comparison of results from detailed and simplified models
- Detailed summary reporting on what has been merged and removed
- Saving simplification settings in a file
- Batch execution of multiple simplifications based on several settings files
Release 2011 of MIKE URBAN includes three new tools to increase your efficiency when building and maintaining models:
1 Database comparison and redoing modifications
This tool will report on differences between two MIKE URBAN databases. Records that are different will be reported as changed, deleted or added. For records which have changed, the attributes that are different will be highlighted. The differences can be saved to a file, which can be used to automatically redo the changes at a later stage, eg when redoing modifications after import.
2 Combining detailed and simplified models
This tool can be used to combine a detailed and a simplified model into a mixed model with both detailed and simplified areas.
3 Comparing results between models
With this tool you can compare two sets of model results at selected locations in batch mode.
Boundary Display in Map View
Boundary conditions are displayed in the map view including: discharge and water level boundaries in MOUSE and SWMM models, rainfall, temperature, evapotranspiration in catchments, as well as water demands in WD models.
Generic Features
Amongst the new generic features in 2011 in particular the climate change tool adds value for MIKE URBAN users. This tool provides climate model output (approved by IPCC) and applies these to make climate change assessment through automated modification of boundary conditions.
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Tuesday, 1 February 2011
The full agenda for the User Group Meeting, on the Tuesday, is currently being finalised (please see http://www.mikebydhi.com/Events/UKUGM12.aspx for up to date details). Confirmed user presentations / papers currently include: -
- '3D modelling of Southampton Water' by URS-Scott Wilson
- 'Ground Source Energy Schemes in London' by ESI
- 'The future of modelling at the UK Environment Agency' by the Environment Agency
- 'Tywyn Coastal Process Assessment: Application of detailed numerical modelling tools for design optimisation' by Atkins
- 'Water Environmental Modelling Using Mike 21 – to assist engineering design' by Arup
- 'Real-Time Surface Water-Groundwater Modeling in the Big Cypress Basin, Florida' by DHI Inc
In addition to the above user presentations, Jørgen Bo Nielsen (Managing Director of DHI Software Products) will deliver a keynote speech entitled 'DHI - Product Evolution & Innovation'. We will also be detailing the new features and technologies available to you within the forthcoming MIKE by DHI Release 2011, as well as outlining future plans for our software.
It is envisaged that, on the Wednesday, the training sessions will cover: -
- Coast & Sea: Extended news and selected features, plus Tips & Tricks and Examples.
- Flooding: Preparation of MIKE 11 river models for use in MIKE FLOOD, plus Tips & Tricks (e.g. MIKE 11 Structures) and Application examples (e.g. NAM).
- Water Resources: Integrated Hydrology and Groundwater Modelling Introduction, and Application Examples.
A ‘drop by’ room is planned which would include a short MIKE FLOOD modelling introduction seminar, together with demonstrations of other new technologies. We are also planning to arrange 'meetings' for those delegates arriving on Monday afternoon (7th March), more on this to follow.
For further details and to book your place online please click below: -
You MUST confirm & pay for your overnight room requirements direct with the Lion Quays. Please book you hotel requirements before 14th February to guarantee your room. This year we have an 'economy option' of a room at a nearby hotel, but with breakfast and lunch at the Lion Quays.
For more information please contact: -- Simon Matthews on 01694 722795 or sm@dhigroup.com
- Steve Flood on: 01752 691723 or sjf@dhigroup.com
- Visit http://www.mikebydhi.com/Events/UKUGM12.aspx
Thursday, 20 January 2011
Coast & Sea
LITPACK Redesign
Release 2011 includes a complete redesign of LITPACK, the modelling package for coastal sediment transport and morphology. The redesign includes:
The redesign is a step towards integration in the coupled MIKE 21 FM.
Cyclone Tool
The MIKE 21 toolbox includes a tool for computing wind and pressure fields generated by a cyclone, hurricane or typhoon.
The old Cyclone Tool uses a parametric model developed in the early 1980s that in some cases overpredicts winds.
In Release 2011, several newer parametric models of the cyclone process have been added.
MIKE 21 SW
The Spectral Wave module includes numerous improvements:
MIKE 21/3 FM Improvements
Apart from the significant speed improvements, several other new features are included in Release 2011:
Particle Tracking and New Oil Spill in FM
Release 2011 also includes an improved Particle Tracking module for the FM series. The module includes added features and larger flexibility in terms of output and functionality.
Now the FM series also includes an oil spill module with the same backbone as the Particle Tracking module.
Mesh Generator Enhancements
The new version of the Mesh Generator tool includes several major enhancements including:
LITPACK Redesign
Release 2011 includes a complete redesign of LITPACK, the modelling package for coastal sediment transport and morphology. The redesign includes:
- A new user interface
- Common setup file for all LITPACK modules
- Flexible definition of input values (constant/time varying/spatially varying)
- User specification of output parameters
- Graphical view of setup in georeferenced domain
- Additional functionality, e.g. calculation of Q-Alpha curves
- Improved Rose Plot: 3rd item defines duration of event
- Improved Profile Editor: Georeferenced line series data
- Improved Project Map: Line series display included
The redesign is a step towards integration in the coupled MIKE 21 FM.
Cyclone Tool
The MIKE 21 toolbox includes a tool for computing wind and pressure fields generated by a cyclone, hurricane or typhoon.
The old Cyclone Tool uses a parametric model developed in the early 1980s that in some cases overpredicts winds.
In Release 2011, several newer parametric models of the cyclone process have been added.
MIKE 21 SW
The Spectral Wave module includes numerous improvements:
- Significant performance improvement by domain decomposition
- Improved convergence of quasi-steady component
- Output of wave power
- Improved description of structures
MIKE 21/3 FM Improvements
Apart from the significant speed improvements, several other new features are included in Release 2011:
- Dynamic update of bathymetries (for dam/dune breaks, morphological seabed changes)
- Improved description of velocity profiles in river simulations
Particle Tracking and New Oil Spill in FM
Release 2011 also includes an improved Particle Tracking module for the FM series. The module includes added features and larger flexibility in terms of output and functionality.
Now the FM series also includes an oil spill module with the same backbone as the Particle Tracking module.
Mesh Generator Enhancements
The new version of the Mesh Generator tool includes several major enhancements including:
- Handling of large scatter data,
- Performance improvement for editing and interpolation in large scatter data sets, and
- Prioritisation of scatter data
Friday, 31 December 2010
Water Resources
Developments in Release 2011 common to all Water Resources Packages:
MIKE FLOOD
In a recent independent review carried out for the UK Environment Agency, MIKE FLOOD received the highest marks - not only for speed but also for model setup, runtime, stability, presentation and visualisation of results, sensitivity tests and file management. MIKE FLOOD achieved the highest overall score in the study. In Release 2011, there are further improvements in both speed and usability.
User interface
New linkage features
MIKE 11
MIKE 1D is a re-engineering project of MOUSE and MIKE 11 simulation engines. The outcome is one common engine for both products. A subset of the complete functionality will be available with the 2011 Release and will ensure faster simulations, 64-bit combability, parallel processing and enhanced interfacing of coupled river-urban simulations.
Client requested MIKE 11 enhancements:
MIKE SHE
Complex water quality modelling of multispecies, kinetic reactions is now available in MIKE SHE using ECO Lab. ECO Lab opens a whole range of new opportunities for comprehensive and flexible water quality and ecohydrology modelling in the overland flow, unsaturated zone and groundwater.
Further, MIKE SHE can now use a fine scale DEM for detailed flooding without seriously impacting runtime.
MIKE BASIN
The irrigation functionality of MIKE BASIN has been extended with alternative runoff and soil water options in Release 2011.
Furthermore, MIKE BASIN has been extended for simulation of crop water requirements and crop yield for rice.
FEFLOW
The HD-coupling between FEFLOW and MIKE 11 have been present for years. With the 2011 Release it is now being supplemented with AD-Coupling for simultaneous HD+AD simulations.
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Developments in Release 2011 common to all Water Resources Packages:
- Climate change functionality
- Parallelisation
- 64-bit applications
- Autocalibration for multicore PCs
MIKE FLOOD
In a recent independent review carried out for the UK Environment Agency, MIKE FLOOD received the highest marks - not only for speed but also for model setup, runtime, stability, presentation and visualisation of results, sensitivity tests and file management. MIKE FLOOD achieved the highest overall score in the study. In Release 2011, there are further improvements in both speed and usability.
User interface
- Reorganised ‘Links Definition’ page which enables an enlarged map view
- Direct access to bathymetry and cross-sections from the map view
- Displaying cross-sections in the map view
- New main menu dialogues for Setting default values of new links and Global change of parameters for links
New linkage features
- New link option - MIKE 11 side structures linked to MIKE 21
- Time dependent levee levels
- Automatic splitting of lateral links into a user-defined number of shorter segments
MIKE 11
MIKE 1D is a re-engineering project of MOUSE and MIKE 11 simulation engines. The outcome is one common engine for both products. A subset of the complete functionality will be available with the 2011 Release and will ensure faster simulations, 64-bit combability, parallel processing and enhanced interfacing of coupled river-urban simulations.
Client requested MIKE 11 enhancements:
- Cross-section editor; automatic update of markers at levees
- Improved copy & paste capabilities
- Additional level in grid points dialogue (Network Editor)
- Executable for batch calculation of Structures Qh relations
MIKE SHE
Complex water quality modelling of multispecies, kinetic reactions is now available in MIKE SHE using ECO Lab. ECO Lab opens a whole range of new opportunities for comprehensive and flexible water quality and ecohydrology modelling in the overland flow, unsaturated zone and groundwater.
Further, MIKE SHE can now use a fine scale DEM for detailed flooding without seriously impacting runtime.
MIKE BASIN
The irrigation functionality of MIKE BASIN has been extended with alternative runoff and soil water options in Release 2011.
Furthermore, MIKE BASIN has been extended for simulation of crop water requirements and crop yield for rice.
FEFLOW
The HD-coupling between FEFLOW and MIKE 11 have been present for years. With the 2011 Release it is now being supplemented with AD-Coupling for simultaneous HD+AD simulations.
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Kathrine Richardson at the MIKE by DHI Conference 2010
Professor Kathrine Richardson, Chairperson of the Danish Government's Commission on Climate Change Policy talks as a keynote speaker at the 2010 MIKE by DHI Software Conference in Copenhagen. The title of the presentation is "The Changing Human - Earth Relationship" and it is about the change in paradigms caused by the realization that human activities are directly affecting the Earth System.
Part 1:
Part 2:
For more videos from the 2010 MIKE by DHI Software Conference in Copenhagen please visit http://www.mikebydhi.com/Events/MIKEByDHI2010/Videos.aspx
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Professor Kathrine Richardson, Chairperson of the Danish Government's Commission on Climate Change Policy talks as a keynote speaker at the 2010 MIKE by DHI Software Conference in Copenhagen. The title of the presentation is "The Changing Human - Earth Relationship" and it is about the change in paradigms caused by the realization that human activities are directly affecting the Earth System.
Part 1:
Part 2:
For more videos from the 2010 MIKE by DHI Software Conference in Copenhagen please visit http://www.mikebydhi.com/Events/MIKEByDHI2010/Videos.aspx
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Thursday, 18 November 2010
The 2011 DHI UK User Group Meeting will be held on the 8th March 2011 at the Lion Quays Waterside Resort, Oswestry.
On the following day, 9th March 2011, training sessions and specialised seminars will be held at the same venue.
Participation in the User Group Meeting is free of charge. The Training Sessions are also free of charge to UGM participants and will include hand-outs, lunch and coffee.
The programme is already filling up but if you would like to present a paper please contact us without delay. The draft agenda will be published in the Christmas 2010 Newsletter.
For more information please contact: -
- Simon Matthews on 01694 722795 or sm@dhigroup.com
- Steve Flood on 01752 691723 or sjf@dhigroup.com
Monday, 15 November 2010
Climate change scenario modelling
Climate change is a reality and it is impacting us through water first!
We are starting to see the consequences in terms of increased frequency and intensity of floods and droughts, more extreme waves, as well as changes in our ecosystems.
Decision makers around the world rely on water professionals to provide the best possible answers to questions on how we can adapt to climate change in the safest and most cost-effective way.
With Release 2011, the key MIKE products include a new Climate Change scenario modelling tool. Water modellers can now provide fast and consistent answers to climate change questions.
How it works
The Climate Change tool is based on the CO2 emission scenarios developed by the Intergovernmental Panel on Climate Change (IPCC). Scientists around the world use Global (or General) Circulation Models (GCMs) to predict the changes in temperatures and precipitation for these IPCC scenarios. It is these predictions that are included with Release 2011 and used as the basis for the Climate Change tool.
To create a new scenario, select: -
1. An existing baseline MIKE model
2. The emission scenario to be simulated
3. The GCM or GCMs to be used for the scaling
4. The year in the future that the simulation should represent
The scaling method is both global and efficient. Based on the GCM output, it modifies your baseline model boundary data. This makes it suitable for fast assessments and screening studies. Thus, many adaptation options can be compared and the best solutions found. The Climate Change tool can also make use of more detailed data such as from Regional Circulation Models.
Included in Release 2011
The new Climate Change tool is a standard feature in Release 2011 of the following MIKE by DHI products: -
We are starting to see the consequences in terms of increased frequency and intensity of floods and droughts, more extreme waves, as well as changes in our ecosystems.
Decision makers around the world rely on water professionals to provide the best possible answers to questions on how we can adapt to climate change in the safest and most cost-effective way.
With Release 2011, the key MIKE products include a new Climate Change scenario modelling tool. Water modellers can now provide fast and consistent answers to climate change questions.
How it works
The Climate Change tool is based on the CO2 emission scenarios developed by the Intergovernmental Panel on Climate Change (IPCC). Scientists around the world use Global (or General) Circulation Models (GCMs) to predict the changes in temperatures and precipitation for these IPCC scenarios. It is these predictions that are included with Release 2011 and used as the basis for the Climate Change tool.
To create a new scenario, select: -
1. An existing baseline MIKE model
2. The emission scenario to be simulated
3. The GCM or GCMs to be used for the scaling
4. The year in the future that the simulation should represent
The scaling method is both global and efficient. Based on the GCM output, it modifies your baseline model boundary data. This makes it suitable for fast assessments and screening studies. Thus, many adaptation options can be compared and the best solutions found. The Climate Change tool can also make use of more detailed data such as from Regional Circulation Models.
Included in Release 2011
The new Climate Change tool is a standard feature in Release 2011 of the following MIKE by DHI products: -
- MIKE 11
- MIKE 21
- MIKE FLOOD
- MIKE SHE
- MIKE URBAN
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Friday, 1 October 2010
MIKE FLOOD – The ultimate modelling software for Flood and Water Management Act 2010 and Flood Risk Management (Scotland) Act 2009 work
Implementation of the first parts of the Flood and Water Management Act 2010 began on the 1st October 2010.
In conjunction with the act, the Flood Risk Regulations 2009 have been established to implement the requirements of the EU Floods Directive in England and Wales. These regulations outline the roles and responsibilities of the various authorities consistent with the Flood and Water Management Act and provide for the delivery of the outputs required by the Directive, specifically: -
The Environment Agency will also be required to develop a national strategy for the management of coastal erosion and all sources of flood risk for England.
The act enhances the role of local authorities so that they take on responsibility for leading the co-ordination of flood risk management in their areas. Local flood risk includes surface runoff, groundwater, and ordinary watercourses
The Flood Risk Management (Scotland) Act came into force on 26th November 2009 and transposes the EC Floods Directive into national law and streamlines the process by which local authorities in Scotland prepare flood schemes.
It places a duty on the Scottish Government, SEPA, Scottish Water and local authorities to better co-ordinate the assessment and management of flood risk. Whereas current policy focuses on river and coastal flooding, the Act covers all sources of flooding, including overloaded sewers.
In addition SEPA will be required to carry out a national assessment of flood risk by 2011, produce new flood risk and hazard maps by 2013 and put in place Scotland's first national flood risk management plan by 2015.
MIKE FLOOD (together with its sister software packages MIKE SHE, MIKE BASIN and ECOLAB, and its full component packages MIKE 21, MIKE 11 and MIKE URBAN) combines the best science of DHI with practical and efficient tools and provides the most complete toolbox for flood modelling available. It includes a wide selection of 1D and 2D flood simulation engines, enabling the fast and efficient modelling of virtually any flood problem whether it involves rivers, floodplains, floods in streets, drainage networks, coastal areas, dam and defence breaches or any combination of the above. MIKE SHE also permits the modelling of surface / groundwater interaction.
MIKE FLOOD builds on well proven technology together with DHI’s extensive international flood modelling expertise and is a key modelling tool in all phases of Flood and Water Management Act 2010 and Flood Risk Management (Scotland) Act 2009 work: -
MIKE FLOOD is applicable at any scale from small developments to regional models.
In a recent independent review carried out for the Environment Agency, MIKE FLOOD received the highest marks not only for speed, but also for model setup, runtimes, stability, presentation and visualisation of results, sensitivity tests and file management - MIKE FLOOD achieved the highest overall score in the study. In the forthcoming Release 2011, there are further improvements in both speed and usability.
For more information about MIKE FLOOD or the other MIKE by DHI software products, feel free to contact Steve Flood on +44 1752 691723 or sjf@dhigroup.com
Implementation of the first parts of the Flood and Water Management Act 2010 began on the 1st October 2010.
In conjunction with the act, the Flood Risk Regulations 2009 have been established to implement the requirements of the EU Floods Directive in England and Wales. These regulations outline the roles and responsibilities of the various authorities consistent with the Flood and Water Management Act and provide for the delivery of the outputs required by the Directive, specifically: -
Preliminary Flood Risk Assessments (PFRAs), which will allow the identification of areas of potential significant risk (required by 2011)
Flood Hazard Maps and Flood Risk Maps, showing impact and extent of possible future significant flood events
Flood Risk Management Plans, in order to identify how significant flood risks are to be mitigated
The Environment Agency will also be required to develop a national strategy for the management of coastal erosion and all sources of flood risk for England.
The act enhances the role of local authorities so that they take on responsibility for leading the co-ordination of flood risk management in their areas. Local flood risk includes surface runoff, groundwater, and ordinary watercourses
The Flood Risk Management (Scotland) Act came into force on 26th November 2009 and transposes the EC Floods Directive into national law and streamlines the process by which local authorities in Scotland prepare flood schemes.
It places a duty on the Scottish Government, SEPA, Scottish Water and local authorities to better co-ordinate the assessment and management of flood risk. Whereas current policy focuses on river and coastal flooding, the Act covers all sources of flooding, including overloaded sewers.
In addition SEPA will be required to carry out a national assessment of flood risk by 2011, produce new flood risk and hazard maps by 2013 and put in place Scotland's first national flood risk management plan by 2015.
MIKE FLOOD (together with its sister software packages MIKE SHE, MIKE BASIN and ECOLAB, and its full component packages MIKE 21, MIKE 11 and MIKE URBAN) combines the best science of DHI with practical and efficient tools and provides the most complete toolbox for flood modelling available. It includes a wide selection of 1D and 2D flood simulation engines, enabling the fast and efficient modelling of virtually any flood problem whether it involves rivers, floodplains, floods in streets, drainage networks, coastal areas, dam and defence breaches or any combination of the above. MIKE SHE also permits the modelling of surface / groundwater interaction.
MIKE FLOOD builds on well proven technology together with DHI’s extensive international flood modelling expertise and is a key modelling tool in all phases of Flood and Water Management Act 2010 and Flood Risk Management (Scotland) Act 2009 work: -
MIKE FLOOD can be applied as a screening tool simulating the areas likely affected by heavy rainfalls
MIKE FLOOD and MIKE SHE can model flood risks and flood hazards from almost all sources in any required detail
MIKE FLOOD can also support the development of flood risk management plans by simulating the effects of flood protection and flood mitigation schemes
MIKE FLOOD is applicable at any scale from small developments to regional models.
Enhanced application examples
MIKE FLOOD has been used extensively for Rapid Flood Hazard Mapping, providing fast and efficient preliminary assessments of flood risk over larger areas and at low cost. The assessments are typically made in simple 2D models forced by rainfall, river flooding and/or storm surge. This also creates a good basis for more detailed analyses in the subsequent phases.
Dynamic flood hazard and flood risk modelling with MIKE FLOOD can be very useful for running hazard mapping scenarios (based upon robust hydraulic modelling), thereby optimising flood defences and evacuation planning for ‘Hazards to People’.
MIKE FLOOD can accommodate simultaneous urban, river and surface water flooding by way of a very flexible 3-way coupling of 1D engines for sewer and river networks (MIKE URBAN and MIKE 11) and 2D overland flow engines (MIKE 21) providing flow transfers and feedback mechanisms between all three engines.
MIKE SHE has been used not only to model the impacts of groundwater induced flooding, but also to model the effects of groundwater on a sub surface drainage system, and associated effects on surface flooding. MIKE SHE can also consider flood mitigation at source by modelling wetlands and riparian barriers to slow runoff into watercourses.
In a recent independent review carried out for the Environment Agency, MIKE FLOOD received the highest marks not only for speed, but also for model setup, runtimes, stability, presentation and visualisation of results, sensitivity tests and file management - MIKE FLOOD achieved the highest overall score in the study. In the forthcoming Release 2011, there are further improvements in both speed and usability.
For more information about MIKE FLOOD or the other MIKE by DHI software products, feel free to contact Steve Flood on +44 1752 691723 or sjf@dhigroup.com
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Thursday, 30 September 2010
Water resources
Whether your projects focus on rivers or groundwater, flooding, sediment transport or ecology, screening analyses or detailed studies, the water resources MIKE by DHI products are preferred by more professionals around the world than any similar products. The MIKE products:
* Cover a wider range of application areas
* Are robust and well proven
* Come with outstanding technical support
* Offer superb training - on location in many languages
For decades, MIKE 11, MIKE SHE and FEFLOW have served as the benchmark that all other modelling packages compare against and strive to match. Users in more than 100 countries will tell you that they have still to find better tools for their projects.
Coast and sea
19 out of 20 of the world’s leading consultants are using MIKE products for their coastal and marine modeling projects. When asked, they say that they prefer the MIKE products because it gives them:
* Increased productivity
* Outstanding technical support
* A full range of tools covering all their marine modeling needs
* Superb training - on location in their own language
The marine MIKE products are proven technology. Thousands of projects have been successfully completed using MIKE 21, MIKE 3 or one of the other marine MIKE products. The MIKE products are accepted for virtually any marine modeling job anywhere in the world.
Cities
When we ask our users why they have selected MIKE by DHI software for their urban modelling projects, they say that it is because they get:
* One package for all urban water modelling and GIS
* Accurate, open and flexible software
* Outstanding technical support
* Superb training - on location in many languages
Since 1985 with the release of MOUSE, the first commercial, fully dynamic modelling package for sewers in the world, DHI has provided cutting edge technology to professional modellers. Thanks to feed-back from the users and extensive research activities, we keep pushing the envelope and improving not only the software, but also the methodologies for optimizing the design and operation of urban water systems.
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Whether your projects focus on rivers or groundwater, flooding, sediment transport or ecology, screening analyses or detailed studies, the water resources MIKE by DHI products are preferred by more professionals around the world than any similar products. The MIKE products:
* Cover a wider range of application areas
* Are robust and well proven
* Come with outstanding technical support
* Offer superb training - on location in many languages
For decades, MIKE 11, MIKE SHE and FEFLOW have served as the benchmark that all other modelling packages compare against and strive to match. Users in more than 100 countries will tell you that they have still to find better tools for their projects.
Coast and sea
19 out of 20 of the world’s leading consultants are using MIKE products for their coastal and marine modeling projects. When asked, they say that they prefer the MIKE products because it gives them:
* Increased productivity
* Outstanding technical support
* A full range of tools covering all their marine modeling needs
* Superb training - on location in their own language
The marine MIKE products are proven technology. Thousands of projects have been successfully completed using MIKE 21, MIKE 3 or one of the other marine MIKE products. The MIKE products are accepted for virtually any marine modeling job anywhere in the world.
Cities
When we ask our users why they have selected MIKE by DHI software for their urban modelling projects, they say that it is because they get:
* One package for all urban water modelling and GIS
* Accurate, open and flexible software
* Outstanding technical support
* Superb training - on location in many languages
Since 1985 with the release of MOUSE, the first commercial, fully dynamic modelling package for sewers in the world, DHI has provided cutting edge technology to professional modellers. Thanks to feed-back from the users and extensive research activities, we keep pushing the envelope and improving not only the software, but also the methodologies for optimizing the design and operation of urban water systems.
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Tuesday, 28 September 2010
Water Forecast for the First 1GW Wind Farm
Once completed the London Array will be the world’s first 1GW wind farm and almost double the British electricity supply from renewable sources. London Array will be built around 20km off the coasts of Kent and Essex in the outer Thames Estuary. The wind farm will be installed on a 245km2 site and will be built in two phases. The first phase, which is planned to be completed in 2012, will cover 90km2 and include 175 turbines with a combined capacity of 630MW. The second phase will add enough capacity to bring the total to 1GW. This is enough to meet the electricity needs of 750,000 homes – around a quarter of Greater London or all of the homes in Kent and East Sussex.
Onshore construction started in July 2009 and offshore construction is scheduled to start in early 2011. Generation is expected to start before the end of 2011, while the second phase is scheduled to come on line by 2015.
The planning and installation of the foundations and turbines relies heavily on accurate hydrographical or metocean forecasts. Such forecasts play a significant role in minimising delays during the construction phase and further ensure that operations can be executed safely and within the predefined operational criteria.
In connection with the project DHI has been commissioned to develop the complete metocean forecasting system which is a prerequisite for efficient and safe planning and operations. The service comprises deployment, maintenance and operation of three wave and current buoys and a tide gauge. All equipped with iridium satellite communication for online data transfer. By applying data assimilation the online measurements are used to feed hydrodynamic models which predict the wave and current conditions. Combined with meteorological models this provides a complete 5-day forecast system for wind, air temperature, sea temperature, visibility, lightning risk, cloud height, water levels, wave heights and currents. Forecasts are disseminated via the Internet and as e-mails. In addition to the forecasts DHI provides in association with StormGeo a 24/7 hotline service including urgent storm/risk of lightning alerts.
DHI has also delivered metocean forecasts for other British wind farms such as Robin Rigg, Walney, Gunfleet Sands and Thanet.
DHI also plays a key role for the planning process for the second phase of the London Array Offshore Wind Farm. As part of the conditions for the construction of the second phase of this ground-breaking project it is required to establish the impact of the construction of the extension to the project on wintering Red-throated Diver Gavia stellata. DHI has been asked to undertake an independent assessment of the risk to the regional wintering population of this priority bird species of the extension through comprehensive modelling of the species' local habitat and estimation of the local population size potentially affected by habitat exclusion from the footprint of the wind farm site.
The assessment will apply state-of-the-art habitat models, which will enable us to identify the most important habitats for wintering divers in the development area based on analyses of the dynamics of diver distributions relative to the oceanographic dynamics of the Outer Thames Estuary. The oceanographic dynamics will be quantified using the same hydrodynamic models as for the forecasting system.
For more information please visit: -
UPDATE: New DHI Offshore Renewables WebsiteImage: London Array
DHI provides the services required to plan, design, install and maintain offshore renewable energy installations worldwide.
Visit our new website and find all necessary information about DHI Offshore Renewable services, from the early feasibility studies to the detailed environmental impact assessments.
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Wednesday, 23 June 2010
Sprinting Ahead of the Competition
MIKE FLOOD continues to go from strength to strength and has proven to be the fastest performing 2D hydraulic modelling package available in the UK.
In an independent review just published by the UK Environment Agency MIKE FLOOD comes out far ahead of all other 2D dynamic modelling packages in terms of speed of simulations. Out of 10 tests, MIKE FLOOD is faster than all other products in 8 – and a close second in the remaining 2. As the numbers below show, MIKE FLOOD is clearly the world's most powerful 1D/2D hydrodynamic engine for flood modelling.
Figure 1: Relative runtimes of the five modelling packages in the 10 tests and overall. Lower values means faster simulations. Green (and the value 1) indicates the fastest package [1]
This confirms the findings of another recent independent survey of users of various 2D flood inundation modelling packages (also carried out for the UK Environment Agency), which awarded MIKE FLOOD the highest user ratings for model setup, runtimes, stability, presentation & visualisation of results, sensitivity tests and file management (MIKE FLOOD achieved the highest overall score).
Figure 2: Average user ratings for most frequently used 2D hydraulic modelling packages (five is excellent, one is poor) [2]
“We are very proud to get the recognition as the fastest and the most user friendly 2D modelling package” says Morten Rungø, Head of Urban Products in DHI. “It is particularly rewarding that this conclusion is based on an independent review with a level playing field for all participants”.
“As for all the products in the MIKE family, training and support for MIKE FLOOD is available in more than 30 countries world wide and in at least twenty different languages. The superior speed, user friendliness and the global training and support are among the main reasons why MIKE FLOOD is preferred by an ever increasing number of professionals all over the world” concludes Morten Rungø.
For more information about MIKE FLOOD or the other MIKE by DHI software products, feel free to contact Steve Flood on +44 1752 691723 or sjf@dhigroup.com
MIKE FLOOD continues to go from strength to strength and has proven to be the fastest performing 2D hydraulic modelling package available in the UK.
In an independent review just published by the UK Environment Agency MIKE FLOOD comes out far ahead of all other 2D dynamic modelling packages in terms of speed of simulations. Out of 10 tests, MIKE FLOOD is faster than all other products in 8 – and a close second in the remaining 2. As the numbers below show, MIKE FLOOD is clearly the world's most powerful 1D/2D hydrodynamic engine for flood modelling.
Figure 1: Relative runtimes of the five modelling packages in the 10 tests and overall. Lower values means faster simulations. Green (and the value 1) indicates the fastest package [1]
This confirms the findings of another recent independent survey of users of various 2D flood inundation modelling packages (also carried out for the UK Environment Agency), which awarded MIKE FLOOD the highest user ratings for model setup, runtimes, stability, presentation & visualisation of results, sensitivity tests and file management (MIKE FLOOD achieved the highest overall score).
Figure 2: Average user ratings for most frequently used 2D hydraulic modelling packages (five is excellent, one is poor) [2]
“We are very proud to get the recognition as the fastest and the most user friendly 2D modelling package” says Morten Rungø, Head of Urban Products in DHI. “It is particularly rewarding that this conclusion is based on an independent review with a level playing field for all participants”.
“As for all the products in the MIKE family, training and support for MIKE FLOOD is available in more than 30 countries world wide and in at least twenty different languages. The superior speed, user friendliness and the global training and support are among the main reasons why MIKE FLOOD is preferred by an ever increasing number of professionals all over the world” concludes Morten Rungø.
[1] The speed comparison can be found on page 93 of the Environment Agency Science Report 'Benchmarking of 2D Hydraulic Modelling Packages'. The above table is converted from runtimes to relative speeds of computation. The complete report can be downloaded from the EA website here http://publications.environment-agency.gov.uk/epages/eapublications.storefront
[2] More information can be found in the ‘Desktop Review of 2D Hydraulic Software Packages’ (Environment Agency Science Report) here http://publications.environment-agency.gov.uk/pdf/SCHO0709BQSE-e-e.pdf.
TUFLOW is a registered trademark of WBM; INFOWORKS is a registered trademark of MWH Soft; JFLOW is a registered trademark of JBA, ISIS is a registered trademark of Halcrow, SOBEK is a registered trademark of Deltares.
For more information about MIKE FLOOD or the other MIKE by DHI software products, feel free to contact Steve Flood on +44 1752 691723 or sjf@dhigroup.com
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