USER MANUAL SWAN Cycle III version 40.72A
USER MANUAL SWAN Cycle III version 40.72A USER MANUAL SWAN Cycle III version 40.72A
22 Chapter 4 (d) Commands for boundary and initial conditions: BOUND defines the shape of the spectra at the boundary of geographic grid BOUNDSPEC defines (parametric) spectra at the boundary of geographic grid BOUNDNEST1 defines boundary conditions obtained from (coarse) SWAN run BOUNDNEST2 defines boundary conditions obtained from WAM run BOUNDNEST3 defines boundary conditions obtained from WAVEWATCH III run INITIAL specifies an initial wave field (e) Commands for physics: GEN1 GEN2 GEN3 WCAPPING QUAD BREAKING FRICTION TRIAD LIMITER OBSTACLE SETUP DIFFRAC OFF SWAN runs in first generation mode SWAN runs in second generation mode SWAN runs in third generation mode activates cumulative steepness method for whitecapping controls the computation of quadruplets activates dissipation by depth-induced wave breaking activates dissipation by bottom friction activates three wave-wave interactions de-actives quadruplets if a certain Ursell number exceeds defines characteristics of sub-grid obstacles activates the computation of the wave-induced set-up activates diffraction de-activates certain physical processes (f) Commands for numerics: PROP NUMERIC to choose the numerical propagation scheme sets some of the numerical properties of SWAN Output commands (g) Commands for output locations: FRAME GROUP CURVE RAY ISOLINE POINTS NGRID defines an output frame (a regular grid) defines an output group (for regular and curvi-linear grids) defines an output curve defines a set of straight output lines (rays) defines a depth- or bottom contour (for output along that contour) defines a set of individual output points defines a nested grid
(h) Commands to write or plot output quantities: Description of commands 23 QUANTITY OUTPUT BLOCK TABLE SPECOUT NESTOUT defines properties of output quantities influence format of block, table and/or spectral output requests a block output (geographic distribution) requests a table output (set of locations) requests a spectral output requests a spectral output for subsequent nested computations (i) Commands to write or plot intermediate results: TEST requests an output of intermediate results for testing purposes Lock-up commands (j) Commands to lock-up the input file: COMPUTE HOTFILE STOP starts a computation stores results for subsequent SWAN run end of user’s input 4.2 Sequence of commands SWAN executes the above command blocks (a,...,j) in the above sequence except (f), (i) and (j). The commands of the blocks (f) and (i) may appear anywhere before block (j), except that TEST POINTS must come after READINP BOTTOM. The commands of block (j) may appear anywhere in the command file (all commands after COMPUTE are ignored by SWAN, except HOTFILE and STOP). A sequence of commands of block (g) is permitted (all commands will be executed without overriding). Also a sequence of commands of block (h) is permitted (all commands will be executed without overriding). Within the blocks the following sequence is to be used: In block (a) In block (b) In block (c) In block (d) In block (e) In block (f) : no prescribed sequence in block : READGRID after CGRID : READINP after INPGRID (repeat both in this sequence for each quantity) : BOUND SHAPE before BOUNDSPEC, otherwise no prescribed sequence in block : use only one GEN command; use command OFF only after a GEN command (note that GEN3 is default) : no prescribed sequence in block
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- Page 5 and 6: Contents 1 Introduction 1 2 General
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- Page 9 and 10: Chapter 1 Introduction The informat
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- Page 17 and 18: which SWAN performs the computation
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- Page 27 and 28: Chapter 3 Input and output files 3.
- Page 29: Chapter 4 Description of commands 4
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(h) Commands to write or plot output quantities:<br />
Description of commands 23<br />
QUANTITY<br />
OUTPUT<br />
BLOCK<br />
TABLE<br />
SPECOUT<br />
NESTOUT<br />
defines properties of output quantities<br />
influence format of block, table and/or spectral output<br />
requests a block output (geographic distribution)<br />
requests a table output (set of locations)<br />
requests a spectral output<br />
requests a spectral output for subsequent nested computations<br />
(i) Commands to write or plot intermediate results:<br />
TEST<br />
requests an output of intermediate results for testing purposes<br />
Lock-up commands<br />
(j) Commands to lock-up the input file:<br />
COMPUTE<br />
HOTFILE<br />
STOP<br />
starts a computation<br />
stores results for subsequent <strong>SWAN</strong> run<br />
end of user’s input<br />
4.2 Sequence of commands<br />
<strong>SWAN</strong> executes the above command blocks (a,...,j) in the above sequence except (f), (i)<br />
and (j). The commands of the blocks (f) and (i) may appear anywhere before block (j),<br />
except that TEST POINTS must come after READINP BOTTOM. The commands of block (j)<br />
may appear anywhere in the command file (all commands after COMPUTE are ignored by<br />
<strong>SWAN</strong>, except HOTFILE and STOP). A sequence of commands of block (g) is permitted (all<br />
commands will be executed without overriding). Also a sequence of commands of block<br />
(h) is permitted (all commands will be executed without overriding).<br />
Within the blocks the following sequence is to be used:<br />
In block (a)<br />
In block (b)<br />
In block (c)<br />
In block (d)<br />
In block (e)<br />
In block (f)<br />
: no prescribed sequence in block<br />
: READGRID after CGRID<br />
: READINP after INPGRID (repeat both in this sequence for each quantity)<br />
: BOUND SHAPE before BOUNDSPEC, otherwise no prescribed sequence in block<br />
: use only one GEN command; use command OFF only after a GEN command<br />
(note that GEN3 is default)<br />
: no prescribed sequence in block
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