03 Application study of shallow water wave model (SWAN)

5. Conclusions
When SWAN is implemented in Bohai Sea and the default value of
model is applied to computation, the HS (significant wave height)
of SWAN is much less than the HS of measurements.
a: By means of analysis of defect of SWAN, we introduce a
parabolic function concerning the friction velocity into the linear
growth term of wind growth model in place of constant
proportionality coefficient (in default, it is constant in SWAN
model) .
b: We conduct four experiments in every wind process to verify the
new formula. The computed results validate our modification in all
of the four wind processes, because the computed results of
amended SWAN model always are more consistent with the
observational data than results of default SWAN model in every
experiment. This improvement maintains good precision in higher
wind speed and improves the poor results when wind is weak.