USER MANUAL SWAN Cycle III version 40.72A
USER MANUAL SWAN Cycle III version 40.72A
USER MANUAL SWAN Cycle III version 40.72A
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
78 Chapter 4<br />
LAY-OUT<br />
[idla]<br />
unstructured grids. Some MATLAB scripts are provided with the <strong>SWAN</strong><br />
source code that can be used to plot wave parameters as maps in a<br />
quick manner.<br />
with this option the user can prescribe the lay-out of the output to file with<br />
the value of [idla].<br />
see command READINP (options are: [idla]=1, 3, 4). Option 4 is recommended<br />
for postprocessing by MATLAB, however, in case of a generated binary<br />
MATLAB file option 3 is recommended.<br />
Default: [idla] = 1.<br />
ONLY MEANT FOR STRUCTURED GRIDS.<br />
For definitions of the output quantities, see Appendix A.<br />
Note that the wave parameters in the output of <strong>SWAN</strong> are computed from the wave<br />
spectrum over the prognostic part of the spectrum with the diagnostic tail added. Their<br />
value may therefore deviate slightly from values computed by the user from the output<br />
spectrum of <strong>SWAN</strong> which does not contain the diagnostic tail.<br />
HSIGN<br />
HSWELL<br />
DIR<br />
PDIR<br />
TDIR<br />
TM01<br />
RTM01<br />
RTP<br />
TPS<br />
PER<br />
RPER<br />
TMM10<br />
RTMM10<br />
TM02<br />
FSPR<br />
DSPR<br />
significant wave height (in m).<br />
swell wave height (in m).<br />
mean wave direction (Cartesian or Nautical convention, see command SET).<br />
For Cartesian convention: relative to x−axis of the problem coordinate system<br />
(counterclockwise); possible exception: in the case of output with BLOCK<br />
command in combination with command FRAME, see command QUANTITY.<br />
peak wave direction in degrees.<br />
For Cartesian convention: relative to x−axis of the problem coordinate system<br />
(counterclockwise); possible exception: in the case of output with BLOCK<br />
command in combination with command FRAME, see command QUANTITY.<br />
direction of energy transport in degrees.<br />
For Cartesian convention: relative to x−axis of the problem coordinate system<br />
(counterclockwise); possible exception: in the case of output with BLOCK<br />
command in combination with command FRAME, see command QUANTITY.<br />
mean absolute wave period (in s).<br />
mean relative wave period (in s).<br />
peak period (in s) of the variance density spectrum (relative frequency spectrum).<br />
’smoothed’ peak period (in s).<br />
mean absolute wave period (in s).<br />
mean relative wave period (in s).<br />
mean absolute wave period (in s).<br />
mean relative wave period (in s).<br />
mean absolute zero-crossing period (in s).<br />
the normalized width of the frequency spectrum.<br />
directional spreading of the waves (in degrees).