Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
Online ISSN : 1883-8944
Print ISSN : 1884-2399
ISSN-L : 1883-8944
Mechanisms of the Local Surface Deformation and Breakup of the Wave Breaking Jets
Ayumi SARUWATARIYasunori WATANABE
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2009 Volume 65 Issue 1 Pages 16-20

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Abstract

Local surface deformations of the wave breaking jets were computed using a three-dimensional large eddy simulation. The typical counter-rotating vortices formed with the jet entrains the adjacent jet surface into inner fluid to penetrate the jet, forming a so-called finger jets. The tips of the fingers are fragmented into sprays. The breakup rate of the fingers and the volume fraction of the resulting sprays have also been statistically estimated in this paper. It has been found that local acceleration along the fingers determines the breakup rate as well as the fluid fraction.

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© 2009 Japan Society of Civil Engineers
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