Introduction
Delft Dashboard is open source package and is part of the OpenEarth suite. It is written in Matlab and provides and model interface for several models (eg. Delft3D-FLOW, XBeach, ed.), however the main functionality is written for Delft3D-FLOW. It uses online available data (bathymetry: GEBCO '08, tide: TPXO). When one would like to set-up a model within minutes the Model maker toolbox can be used. For more advanced Delft3D-FLOW functionality (tropical cyclones, tsunami's ed.) also toolboxes are developed. On this page the different Matlab routines applied within Dashboard are elaborated.
Model maker
The toolbox Model Maker has two functions which can be used for all models supported (Delft3D-FLOW, Delft3D-WAVE, D-FLOW FM and XBeach) which makes it easy to set-up a rectangular grid and a matching bathymetry. For FLOW also functionality related to boundary conditions and roughness is implemented.
1) Make a rectangular grid
A rectangular grid can be created for every model supported by Delft Dashboard. The basic procedure will contain of three steps.
1) All the relevant variables (grid orientation, resolution) are loaded from the interface in Dashboard (getHandles).
2) Creation of a full grid based on the active bathymetry (often GEBCO '08). This full grid will have a margin of 20 percent and is thus larger than the grid defined in Dashboard. This is done in order to overcome interpolation issues. This full grid will also have a bathymetry in order to determine where the grid needs to be cut-off based on the maximum height (Z Max) described in Dashboard. This step is carried out by the function ddb_ModelMakerToolbox_makeRectangularGrid.
3) The final grid is created based on this larger grid. Rotation is taken into account and cells above a certain threshold (Z max) are deleted. This step is carried out by the function MakeRectangularGrid.
Figure: code structure of the routines needed to create a rectangular grid in Dashboard
2) Make a bathymetry
A bathymetry can be created for every model supported by Delft Dashboard. The basic procedure will contain of three steps.
1) All the relevant variables (grid orientation, resolution) are loaded from the interface in Dashboard (getHandles).
2) The data sets described in Bathymetry are prepared to be applied in the actual bathymetry. This means that for every grid cell there is at least a value (possible NaN).
3) The different bathymetric data sets are used in the order defined. Dashboard applies a linear interpolation from the grid the bathymetry is defined on to the grid it needs to be calculated on. On top of that Dashboard takes into account model offset and can apply an internal diffusion in order to overcome possible undefined cells (NaNs).
3) Make open boundaries and create boundary conditions
Boundary conditions for Delft3D-FLOW can be created with Delft Dashboard. The basic procedure will contain of three steps.
1) All the relevant variables (grid, bathymetry, number of boundaries and source) are loaded from the interface in Dashboard (getHandles).
2) A specific number of open boundaries is created
3)
4) Roughness
