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*WAVEDIR
Data format:
A line with one value (IDIR) followed by a two lines with IDIR-1 value
IDIR
TETA(1) ... TETA(IDIR-1)
PER(1) ... PER(IDIR-1)
Purpose :
To split a wave defined as a wave elevation in more than one direction
Restriction :
A wave defined by a wave elevation time series must have been previously defined
Details :
| Parameter | Description |
|---|---|
| IDIR | Number of directions (must be greater than 1) |
| TETA(1) ... TETA(IDIR-1) | Extra directions (degrees) |
| PER(1) ... PER(IDIR-1) | cut-off periods (seconds, in increasing order) |
When defining a wave from a wave elevation, a reference direction is entered (See WAVE ). A Fourier transform is then performed to reproduce the wave elevation in terms of Fourier series and all the components are applied in the reference direction. With the parameter IDIR (IDIR >1), the Fourier spectrum can be split in IDIR directions. Then IDIR-1 direction must be defined (the reference direction is the first direction). The Fourier components of the wave elevation between 0 seconds and PER(1) seconds will be applied in the reference direction, between PER(1) seconds and PER(2) seconds in TETA(1) and so on.
