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Toolbox

To perform a number of operations according to the Toolbox selected from the Toolbox tab in the Top Menu.  For For all the supported models this the startup toolbox is the quick mode of the model maker and . For Delft3D-WAVE also the possibility to combine several sources of bathymetry is implemented.

Description

To add a description to the communication file (MDW file eg.) to describe the purpose of the present model.

Hydrodynamics

Delft3D-WAVE can be use uncoupled (stand-alone) or coupled (offline and online). When choosing the coupled option the user needs to specify the MDF-file of the specific the corresponding Delft3D-FLOW model. Another possibility is the online with Dashboard Flow option. This option will automatically result between in a coupling between FLOW and WAVE, a commonly used feature.

• Grids: One or more spatial grids on which SWAN solves the wave action balance equation.
• Bathymetry: The bathymetry of the area to be modeled
• Spectral resolution: The boundaries and resolution of the directional and frequency space, which SWAN uses to perform the computations
• Nesting: When two or more computational grids are defined, you have to define which grid is nested in which. This means the possibility of a rougher and finer Delft3D-WAVE grid. Coupling with FLOW is defined in the data group Hydrodynamics.

Time Frame

Defines the computational mode (stationary or non-stationary) and the time points for the WAVE computation

Time Frame

Defines the relation between the time axis of the real world (absolute time) and that of the simulation (relative time). “Reference Date” defines the arbitrary time t = 0 for all the time series computed by the simulation. “Start Time” and “Stop Time” defines start time and end time of the simulation. “Time Step” defines the Time step (in minutes) used in the computation. “Time Zone” defines the time difference between local time and GMT time and it is used to determine the phases in the local time of the tidal components when tide generating  forces are included in the simulation.

Boundaries

To define the boundaries, their location, type and other parameters describing them. It is possible to vary conditions in space and orientation. The wave spectrum can be created based on a parametric relation or via the usage of a sp2 file.

Physical Parameters

To select or specify a number of parameters related to the physical conditions of the model area. The data Group Physical parameters contains the following sub-data groups in the Working Space: Constants, RoughnessWind, Viscosity, Sediments, Morphology, Heat Flow, Wind. The  tabs for Constants, Roughness and Viscosity Processes, Various. All the tabs are always visible. The other tabs are only visible if the associated processes are switched on. 

• Constants: to define values for: “Gravity”, “Water Density”, North axis, minimum depth, wave set-up, cibvections convection (nautical or cartesianCartesian) and options for wave forces.
• Wind: to add a wind field or apply a uniform wind speed and direction. A wind field can be saved to a “*.wnd” is saved as .wnd file.
• Processes: to define a whole number of processes. SWAN can run in several modes, indicating the level of parameterization. The default is the 3rd generation which supports depth-induced wave breaking, LTA (non-Linear Triad interActions), bottom friction and diffraction. More information about these processes can be found in the Delf3D-WAVE manual.
• Various: several processes can be activated like wind growth, quadruplets and white capping, refraction and a frequency shift.

Numerical Parameters

To specify parameters related to drying and flooding and some other advanced options for numerical approximationsthe spectral space and the accuracy criteria.

Output

To specify “Start Time”, “Stop Time”, “Time Step” at which output data will be stored in the Map output File. In case of simulation run with coupling, “Start Time”, “Stop Time” and “Time Step” at which data will be saved in the communication file can be specified. Moreover, the “History Time Step”, defining the time step at which information is stored for the observation points, can be specified. “Online visualization” is used to inspect results during the computation. “Online coupling” is available when you store results to the communication fileselect or specify output there are a number of possibilities. The data Group Output contains the following sub-data groups in the Working Space: General, Grids, Locations, Curves and Debug. All the tabs are always visible. 

• General: enables options related to hot start, verfication of input files and output for a FLOW grid.
• Grids: gives the user the possibility to write output for the computational grid(s) used.
• Locations: it is also possible to specify locations by clicking on the map. At the right side of the window, the user can define what output (table, 1D spectra, 2D spectra) needs to be presented.
• Curves: not yet implemented in Dashboard
• Debug: this feature is used for debugging options.