A NEW TYPE BREAKER FORMING A GIANT JET AND ITS DECAYING PROPERTIES

Takashi Yasuda, Hiderni Mutsuda, Akihide Tada, Atsushi Oya, Tadashi Fukumoto

Abstract


Experiments in a wave flume(lm x 2m x 65m) with 16 wave gages and numerical simulations using a fully nonlinear BIM(Boundary Integral Method) in a super-computer(VP2600) are conducted to make clear the characteristics and occurrence condition of a new type breaker. Further, its deformation and wave height decay after breaking are investigated. It is shown that the new type breaker forms a giant jet with the size exceeding three times of the maximum jet size of usual type breakers and therefore is very efficient to wave control because of strong turbulence excited by plunging of the giant jet and the resultant remarkable absorption.

Keywords


breaking waves; jet; giant jet; breaker decay

Full Text: PDF

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.