FEFLOW Adapter

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

About FEFLOW

FEFLOW is software developed by DHI Group for Subsurface flow & transport modelling. Please refer to MIKE BY DHI for more information.

Prerequisites

The Adaptor requires FEFLOW to be installed on the MIKE Workbench computer (for registration) and the run machine. The execution of models will require a FEFLOW license on the run machine.

Note

Make sure to restart your computer after installing FEFLOW, before registering or running FEFLOW models using the FEFLOW model adapter.

Supported Model objects

The table below shows how the FEFLOW model objects are translated within the MIKE Workbench. In the third column it can be seen whether the model object is geo-referenced and how it is visualized in the MIKE Workbench.

Object in FEFLOW	Workbench Model Object Type	Parameters/Time Series	Symbol
N/A	FEFLOW
Elements	Element
Boundary Conditions (BC)/Fluid flow/ Hydraulic-head BC	Hydraulic-head BC	Value (Water Level [m])
##	Boundary Conditions (BC)/Fluid flow/ Well BC	Well BC	Water Flow [m^3/d] (input ts)
Boundary Conditions (BC)/Fluid flow/ Multilayer Well	Multilayer Well	Pumping rate
Node Selection	Node Selection	Area_Budget Water Flow [m^3/d] (Output ts) BC_Budget Water Flow [m^3/d] (Output ts) Storage_Budget Water Flow [m^3/d] (Output ts)
Observation Points	Observation Point	Hydraulic_Head Water Level [m] (Output ts)
##	Boundary Conditions (BC)/Fluid flow/ Fluid-transfer BC	Fluid-transfer BC	Water Level [m] (Input ts)
##	Boundary Conditions (BC)/Fluid flow/ Fluid-transfer BC (Integral)	Fluid-transfer BC (Integral)	Water Level m
Boundary Conditions (BC)/Fluid flow/ Fluid-flux BC	Fluid-flux BC	Value (Infiltration [m/d])
Element Selection	Element Selection	Area_Budget Water Flow [m^3/d] (Output ts) BC_Budget Water Flow [m^3/d] (Output ts) Storage_Budget Water Flow [m^3/d] (Output ts)
Edge	Edge Selection	Area_Budget Water Flow [m^3/d] (Output ts) BC_Budget Water Flow [m^3/d] (Output ts) Storage_Budget Water Flow [m^3/d] (Output ts)
Nodal selections	Nodal Expr. Dist. Nodal Ref. Dist.	Distribution Value (value to set on the nodel distribution for an applied node selection) NodeSelection (node selection applied to the nodal distrution, specifying what nodes to set) Value Ranges (value ranges used for generating polygons of spatial output “SpatialDistribution”) SpatialDistribution (the sptial output feature class contining polygons)

Configuration

Model preparation

The model must have been successfully executed.

No specific configuration of a FEFLOW model setup must be followed to register it into the MIKE Workbench.

When registering the model, spatial data will be stored using the WGS 84 Pseudo-Mercator projection.

Registration

The following illustrates the registration process.

1. From Scenario Manager in MIKE Workbench the user selects "Register model"
   

2. The user selects the FEFLOW model adapter
   

3. The user provides selects the .fem file containing the FEFLOW model information.
   
   Select the coordinate system used by nodes and elements if the coordinate system was not applied to the model, or not recognized.
   Please select model object types to be used on scenarios or for required for visualization. Only model object types selected will be parsed during registration.
   Click next to let the FEFLOW adapter read the model information.

4. Review the model and remove model objects not needed in scenarios.
   

   • Remove model objects
     
     Remove model objects without interest, so that they are not part of the model objects to set input and load results from.

   • Register node selections as polygons
     
     Node points of a node selection will be converted into polygons.

   • Apply node selections on nodal distributions
     
     
     Select one or more node selections to use for setting values on nodal distributions and for reading results. When node selections have been applied, a nodal distribution will be created for each nodal selection applied. Each new nodal distribution model object will have a spatial output time series associated, providing a feature class as output. The feature class is generated from the node selection and the value ranges set on the nodal distribution.

     After reviewing the parsed model, click Prepare for Registration and Next.

5. Then the adapter presents a list of the model objects. Clicking Cancel will stop the registration process.
   
   
   Click Next

6. Finally, 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
   

7. Clicking Finish will return the model setup information to MIKE Workbench.

8. Open the model setup to view the registered model.
   

Model execution

When running FEFLOW, MIKE OPERATIONS will:

1. Export the original model fem file
2. Use python scripts to update the input time series, well Boundary Conditions and simulation dates
3. Run feflow*c.exe (e.g , feflow81c.exe)

Warning

If you run FEFLOW on MIKE Cloud, make sure to read this section.