
Calibration Parameters
139
Plunging
is the form of breaking where the upper part of the wave breaks
over its own lower part in one big splash whereby most of the energy is lost.
This form of breaking takes place in case of moderately steep waves on a
moderately sloping shoreface.
Figure 5.26
Surging
Surging
is when the lower part of the wave surges up on the shoreface in
which case there is hardly any surf zone. This form of breaking takes place
when relatively long waves (e.g. swell) meet steep shorefaces.
White-capping
or top-breaking is steepness-induced wave breaking which
occurs on deeper water when the wave height becomes to large compared to
the wave length. White-caps can be observed in the figure below.
Figure 5.27
White caps in open water
5.3.9
Moving shoreline
The incorporation of a moving shoreline in MIKE 21 BW is based on the fol-
lowing approach: the computation domain is extended artificially by replacing
the solid beach by a permeable beach characterised by a very small porosity.
Near the moving shoreline the water surface will insect with the sea bed and
continue into the porous beach. Hence the instantaneous position of the
shoreline is simply determined by this intersection. Please read pp. 263-266
in Madsen et al (1997a) included in the scientific documentation.
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...