Examples
66 MIKE 21 BW - © DHI
Results from a MIKE 21 SW simulation have been compared to results from
the MIKE 21 BW irregular wave case. Figure 4.40 shows maps of significant
wave heights and wave directions. In Figure 4.41 a comparison is made
between the two models prediction of the significant wave height along two
cross-sections. An excellent agreement is seen at in wave breaking zone (x=
300-500m, upper panel). MIKE 21 BW predicts slightly higher waves immedi-
ately before breaking which is due to nonlinear shoaling. The observed oscil-
lations offshore the breaking point is caused by reflection from the island.
Behind the island the phase-resolving model (MIKE 21 BW) results in larger
waves than the phase-averaged model (MIKE 21 SW) which is caused by
effects of diffraction, reflection and nonlinearities.
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