swanwindspconst#

[swanwind] = swanwindspconst(windvel, winddir, winddirtype, windvelmin, savedata, outfilename, outfilelocation)

Description#

Generate SWAN wind file for spatially constant wind

Inputs#

windvel: Wind velocity

If size of windvel>1, then it is considered as a time series

1st element is 1st time step, 2nd element is 2nd time step, …
winddir: Wind direction in (Degree)
winddirtype=’mete’;: Define wind direction type

‘mete’: meteorological wind direction

Meteorological direction represents a direction wind comes from and is measured counter-clockwise from the North

0 (degree): from North, 90 (degree): from East, 180 (degree): from South, 270 (degree): from West

‘trig’: trigonometric wind direction
windvelmin=0;: Minimum allowed wind velocity
savedata=’no’;: Define if save data in a file or not

‘no’: does not save

‘yes’: save data as ascii file
outfilename=’swanwind.wnd’;: Name of output file between ‘ ‘ mark, example: ‘swanwind.wnd’

outfilename should have ‘.wnd’ extension
outfilelocation=pwd;: Location of output file between ‘ ‘ mark, example: ‘C:' in MATLAB, or ‘C:/’ in Python

Outputs#

swanwind: Spatially constant wind data formated for SWAN

Note: Wind at each time step is assigned into 4 points,

assuming the wind domain is defined by 4 points, one at each corner

Examples#

windvel=[10.5;10.6;10.55]; %Data for 3 time steps
winddir=[30;32;28]; %Data for 3 time steps
winddirtype='mete';
windvelmin=2.5;
savedata='no';
outfilename='swanwind.wnd';
outfilelocation=pwd;
[swanwind]=swanwindspconst(windvel,winddir,winddirtype,windvelmin,savedata,outfilename,outfilelocation);

References#

Booij, N. R. R. C., Ris, R. C., & Holthuijsen, L. H. (1999). A third‐generation wave model for coastal regions: 1. Model description and validation. Journal of geophysical research: Oceans, 104(C4), 7649-7666.

SWAN Team. (2007). S WAN user manual. Delft University of Technology. The Netherlands.

swanwindspconst

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