SMS:CMS-Wave Model Control

File:CMSWaveModelControl.jpg

CMS-Wave Model Control dialog

The Model Control… command in the CMS-Wave Menu opens the CMS-Wave Model Control dialog. This dialog is divided into sections for different types of parameters which are used by the model as it runs. These include:

Input Forcing

• Currents – A vector dataset can be used to define the currents for the simulation
• Water Level – A constant value or a scalar dataset can be used to define the water level for the simulation. If “constant” is selected, the constant value will be defined in the CMS-Wave Case Definition dialog for each case.
• Spectra

• Source:

• Spatially Varied – this option uses a spectral coverage with spectral data defined at one or more locations. The spectral coverage is assigned to the model in the CMS-Wave Case Definition dialog.
• Parent Grid – Nesting output from a parent grid will be used to drive the simulation. The parent grid is specified by clicking on the Select… button and selecting the desired grid. The spectral grid to be used for the simulation will match the spectral grid for the parent simulation.

• Plane Type – this option is only used if the Spatially Varied source option is selected.

• Half plane
• Full plane
• Full plane with input reverse spectra – this option allows spectral input to be used on two opposite boundaries.

• Interpolation Type – sets the method for STWAVE to use when interpolating between spectra

• Average spectra
• IDW interpolation

• Create Nesting Points – if the From parent grid source option is selected and a parent grid has been specified, clicking on this button will allow the user to specify which points should be used from the parent grid for creating the nesting file

• Wind – a constant value or a vector dataset can be used to define the wind for the simulation. If constant is selected, the wind direction and magnitude will be specified in the CMS-Wave Case Definition dialog for each case.

Settings

The settings section is used to specify model input options including:

• Forward reflection

• Spatially constant (0.0 – 1.0 range)
• Spatially varied – select a dataset

• Backward reflection

• Spatially constant (0.0 – 1.0 range)
• Spatially varied – select a dataset

• Muddy bed

• None
• Spatially varied – select a dataset (0.0 – 0.1 value range, 0.04 recommended)

• Bed friction
• Matrix solver
• Allow wetting and drying
• Nonlinear wave effect
• Runup
• Infragravity wave effect
• Diffraction intensity
• Currents
• Spatial wind field

• None
• Spatially varied – select a dataset (values in m/s at 10 m)

• Spectral type

• Half plane
• Full plane
• Full plane with *.spc file

• Dates/Times

Wave Source

The wave source options include:

• Spectra – wave state is specified as a wave spectrum on the boundary and the model propagates the spectra over the domain
• Wind – waves are generated from wind energy only
• Spectra and wind – a combination of the spectra and wind types are used
• Simplified formulation – boundaries are specified in the same manner as "Spectra and wind", but the model uses a simplified formulation internally. This can be used for faster run times, however the results will be less accurate.

Output

This section is used to specify option output from the model. The output includes:

• Radiation stresses
• Sea/Swell
• Wave Breaking

Input Datasets

Here the user can specify the format for SMS to write out the input datasets. They can be written in either ASCII or XMDF format.

Related Topics

• CMS-Wave