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Experimental investigation of breaking criteria of deepwater wind waves under strong wind action

Cited 10 time in Web of Science Cited 12 time in Scopus
Authors
Oh, Sang Ho; Mizutani, Natsuki; Suh, Kyung-Duck; Hashimoto, Noriaki
Issue Date
2005
Publisher
Elsevier
Citation
Applied Ocean Research 2005;27:235-250
Keywords
wave breaking criteriaparticle image velocimetrywind waveslaboratory experiment
Abstract
The present study describes an experimental investigation of breaking criteria of deepwater wind waves under strong wind action. In a wind wave flume, waves were generated using different wind speeds and measured at different locations to obtain wave trains of no, intermittent, or frequent breaking. Water particle movement and free surface elevation were measured simultaneously using a PIV system and a wave gauge, respectively. For wind waves, not all the waves measured at a fixed location are breaking waves, and the breaking of a larger wave is not guaranteed. However, the larger the wave height, the larger the probability of breaking. In order to take as many breaking waves as possible for the cases of frequent breaking, we used the waves whose heights were close to the highest one-tenth wave height. The experimental results showed that the geometric or kinematic breaking criteria could not explain the occurrence of breaking of wind waves. On the other hand, the vertical acceleration beneath the wave crest was close to the previously suggested limit value, , when frequent breaking of large waves occurred, indicating that the dynamic breaking criterion would be good for discriminating breaking waves under a strong wind action.
ISSN
0141-1187
Language
English
URI
https://hdl.handle.net/10371/67653
DOI
https://doi.org/10.1016/j.apor.2006.01.001
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Civil & Environmental Engineering (건설환경공학부)Journal Papers (저널논문_건설환경공학부)
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