Energy dissipation and spectrum evolution during the breaking of modulated wave trains
نویسندگان
چکیده
In this paper the wave breaking induced by modulational instability is investigated numerically. The wave train is composed by a fundamental component with two sideband disturbances and the analysis is performed for those conditions in which the instability leads the limiting steepness to be exceeded. Due to the different speeds characterizing individual waves and the peak of the envelope, the breaking is recurrent and several breaking events are found. The study is focused on the quantification of the initial energy fraction dissipated by the entire breaking process and on the changes operated by the breaking to the initial spectrum.
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