
Reference Manual
164
MIKE 21 BW - © DHI
Remarks and hints
When you specify the spatial range of your output data (1DH module only)
you also have to specify the number of points you would like to save, N
points
.
The output result is interpolated to a grid having the constant spatial resolu-
tion of J
last
-J
first
+1/N
points
.
In case you use a
structured mesh
of the bathymetry we recommend you to
use the suggested default value of N
points
(=J
last
-J
first
+1). For
unstructured
meshes
we recommend you to use a larger value of N
points
, in order to have a
high resolution in the surf and swash zone. Further it is recommended (for
unstructured meshes) to save the entire profile of data, i.e. keep the default
values of J
first
and J
last
.
5.4.3
Wave disturbance parameters
Figure 5.47
A number of wave disturbance parameters can be extracted from a
MIKE 21 BW simulation including detailed sub-area statistics
The
wave disturbance coefficient
is defined as the ratio of the significant
wave height relative to the incoming significant wave height. If e.g. the wave
height at a given position is 0.5 m and the incoming (offshore) wave height is
2.0 m, then the wave disturbance coefficient is 0.5/2.0 = 0.25, or 25%.
Output parameters
The results from the wave disturbance calculation are stored in a data file
(.dfs2) with up to 3 items:
Significant wave height, H
m0
Wave disturbance coefficient, H
m0
/H
m0
, incoming
Time of arrival of the first wave that is used in the calculation
Содержание 21 BW
Страница 1: ...MIKE 2017 MIKE 21 BW Boussinesq Waves Module User Guide...
Страница 2: ...2...
Страница 4: ...4 MIKE 21 BW DHI...
Страница 13: ...General Description 13 Figure 2 4 Simulation of wave penetration into Frederikshavn harbour Denmark...
Страница 16: ...Introduction 16 MIKE 21 BW DHI...
Страница 75: ...2DH Boussinesq Wave Module Examples 75 Figure 4 45 Visualisation 2D of instantaneous surface elevation...
Страница 185: ...Entries Arranged Alphabetically 185 Figure 5 58 Application of different time extrapolation factors...
Страница 190: ...Reference Manual 190 MIKE 21 BW DHI...
Страница 192: ...Scientific Documentation 192 MIKE 21 BW DHI...
Страница 193: ...193 INDEX...