Warning

This adaptor is not supported anymore because MIKE FLOOD was last released with MIKE 2023.
When running a simulation, MIKE OPERATIONS will look for a MIKE Zero installation matching the MIKE OPERATIONS version. For example, MIKE OPERATIONS 2025 will run the simulation with
C:\Program Files (x86)\DHI\MIKE Zero\2025\bin\x64\DHI.Couplings.Runner.exe
Over time, newer versions of the coupling engine will not run with the older MIKE FLOOD models registered in MIKE OPERATIONS.
We recommand upgrading to MIKE+.

MIKE FLOOD Adapter¶

This adapter enables the use of MIKE FLOOD models within the MIKE Workbench.

Introduction¶

MIKE FLOOD is the unique toolbox for professional flood modelers. It includes a wide selection of specialized 1D and 2D flood simulation engines, enabling you to model any flood problem - whether it involves rivers, floodplains, flooding in streets, drainage networks, coastal areas, dams, levee and dike breaches, or any combination of these.

The core elements in MIKE FLOOD are the models, MIKE HYDRO River for rivers, MIKE URBAN for collection systems and MIKE 21 for 2D surface flow. These are coupled to form a three-way coupled modelling tool.

Benefits¶

MIKE FLOOD builds on well-proven technology and simulation engines, which are applied successfully in numerous important engineering projects all over the world.
With the parallel 2D engines, it provides a unique framework for coupling 1D and 2D models using graphics processing units (GPU) for fast simulation execution.
Especially for environmental flood impact assessments, MIKE FLOOD provides unique features for dynamically coupled pollution transport and water quality processes.
It offers the highest flexibility in options for coupling 1D and 2D engines
Integrated flood modelling comprising dynamic coastal, urban, river and floodplains interactions
Access to flood modelling expertise in more than 30 countries around the world

Typical Applications¶

MIKE FLOOD is applicable at any scale from a single parking lot to regional models offering multiple options for speeding up computation performance through parallelized simulation engines. Applications range from classical flood extent and risk mapping to environmental impact assessments of severe flood events.

MIKE FLOOD is the ideal software for:

Flood forecasting
Flood management and mitigation
Flood risk analysis and flood hazard mapping for industrial, residential, or cultural heritage areas
Flood contingency planning like evacuation routes and rescue priorities planning
Climate change assessments
Dam breach and flood defense failure impact studies
Integrated urban, river and coastal flood modelling

Concept¶

The MIKE FLOOD adapter is using the concept of linked models in MIKE WORKBENCH. Linked models allows linking a range of models in sequence, so that results from a model can be used as input for the next model in the model sequence.

MIKE FLOOD contains information about what output of a model is linked to what input in the next model. This information is transferred to MIKE WORKBENCH when registering the MIKE FLOOD model.

Limitations¶

The model adapter allows linking the following model types.

MIKE 11/MIKE HYDRO River
MIKE 21 FM
MIKE+/MIKE URBAN

Prerequisites¶

The configuration and execution of MIKE FLOOD models requires that MIKE FLOOD and the engines of the models being linked are installed on the system.

Configuration¶

This section describes the formats and details of the MIKE FLOOD adapter.

MIKE FLOOD model setup¶

The model setup contains a linking model with information about what models are being linked and in what sequence the models should run.

In the scenario explorer, a model setup for the linking model and all the linked models can be found.

The scenario of the linking model will show the entire setup with all input and outputs of the linked models.

The linked models can be opened individually in the list view.

Model Object Types¶

As MIKE FLOOD is provide linking existing model adapters, refer to the documentation of the adapter being linked for information about supported model objects and parameters.

Lateral River Link
The link is the connection between one MIKE 11 river reach (within one branch) and a series of MIKE 21 cells/elements.
A lateral link allows a string of MIKE 21 cells/elements to be laterally linked to a given reach in MIKE 11, either a section of a branch or an entire branch. Flow through the lateral link is calculated using a structure equation. This type of link is particularly useful for simulating overflow from a river channel onto a flood plain.
Lateral Urban Link
The link is the connection between one MIKE + natural channel reach and a series of MIKE 21 FM elements.
River Urban Link
Used for connecting the collection system directly with the river system. The river urban link has been designed for modelling the dynamic interaction of the river network and the collection system. Areas of application are:
- Collection system discharging to a river through an outlet
- Pumps discharging to a canal
- A collection system spilling into a stream over a weir
  The river - urban link has been designed so that it may be used with a full three component model but is also applicable when the model only consists of MIKE URBAN(MOUSE) and MIKE 11.
Standard Link
The link is the connection between the end of a MIKE 11 branch and a series of MIKE 21 cells or element faces (the latter if MIKE 21 FM is used).
This is the standard linkage in MIKE FLOOD, where one or more MIKE 21 cells/elements are linked to the end of a MIKE 11 river branch. This type of link is useful for connecting a detailed MIKE 21 grid/mesh into a broader MIKE 11 network, or to connect an internal structure (with an extent of more than a grid cell) or feature inside a MIKE 21 grid/mesh.
Urban Link
The link is the connection between one or more cells in MIKE 21 and a manhole, a basin, a weir, an outlet, or a pump in MIKE URBAN(MOUSE).
The urban link is designed to describe the interaction of water when a manhole is overtopped or when overland flow enters a sewer/storm water network.
The urban link may also be used for linking a sewer outlet with the overland topography. This may be used to describe the dynamic interaction between a sewer system and a collection basin described using the topography as opposed to describing the basin using an area elevation curve.
Finally the link is also applicable to situations where the sewer system is discharging into the surrounding area through a pump or over a weir. In these cases the pump or the weir must be defined as having no downstream node.
The link is designed such that one or more cells/elements in MIKE 21 may be linked to a manhole, basin, outlet, pump or weir in MIKE URBAN(MOUSE).
X Flow Links
A MIKE 21 cell specified as a zero-flow link in the x direction will have zero flow passing across the right side of the cell.
Y Flow Links
A MIKE 21 cell specified a zero-flow link in the y direction will have zero flow passing across the top of the cell.
Structure Links
The link is the connection between the end of a MIKE 11 branch and a series of MIKE 21 cells (same as a standard link). However, two links are required for each structure link - one for each end of the structure. These link pairs should link adjacent cells in the grid.
The structure link takes the flow terms from a structure in MIKE 11 and inserts them directly into the momentum equations of MIKE 21 (rectangular MIKE 21 version only). This is fully implicit, so should not affect time step considerations in MIKE 21. The structure link is useful for simulating structures within a MIKE 21 model. The link consists of a 3-point MIKE 11 branch (upstream cross-section, structure, downstream cross-section), the flow terms of which are applied to a MIKE 21 cell or group of cells.
Side Structure Links
The link is the connection between a side structure location in MIKE 11 and a single or group of MIKE 21 cells or element faces.
The Side Structure Link is designed to model interaction between the river model and the overland flow model through Side Structures as defined in MIKE 11.
Side structures can be defined in MIKE 11 for almost all structure types available and then are typically applied in MIKE 11 to define local lateral abstraction (or source) of water from the main river course in applications where either fixed hydraulic structures are present to convey water from the main river course to a neighbor area or channel-system or where e.g. a local breach of embankment occurred during a historical event.
Coupling Parameters
Parameters defining what model types are linked and the paths to linked models.

Model registration¶

The following illustrates the registration process.

From Scenario Manager in MIKE Workbench the user selects Register model
The user selects the MIKE FLOOD model adapter
The user provides selects the MIKE FLOOD couple file .couple file containing the MIKE FLOOD coupling information.

Click next to let the MIKE FLOOD adapter read the coupling information.
After reviewing the parsed coupling information, click Prepare for Registration and Next.
Then the adapter presents a list of the model objects. Clicking Cancel will stop the registration process.

Click Next
The adapter offers the possibility to name the default scenario on the model setup or create the scenario from a template. Clicking Cancel will stop the registration process
The registration will require that the linked models are registered in a separate registration process.
The registration wizard will by default suggest the linked models as specified in the MIKE FLOOD coupling file.
Use the register wizard to register the linked models. Similar to registering the models individually.
Refer to the sections about registering the models.
When the process of registering the linked models is done, the models can be found in the Scenario Explorer.
Only the linked model contains a scenario for executing the MIKE FLOOD model.
The linking model and the linked models can be opened individually.