Experimental Study of Wave Breaking Criteria and Energy Loss Caused by a Submerged Porous Breakwater on Horizontal Bottom

Yi-Chun Liao; Jyun-Han Jiang; Yi-Ping Wu; Chung-Pan Lee

doi:10.6119/JMST-011-0729-1

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P35 - 41

Basic & Applied Sciences > Oceanography
Engineering > Municipal Engineering & Environment Engineering

DOI： 10.6119/JMST

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Experimental Study of Wave Breaking Criteria and Energy Loss Caused by a Submerged Porous Breakwater on Horizontal Bottom

Yi-Chun Liao ； Jyun-Han Jiang ； Yi-Ping Wu ； Chung-Pan Lee

Journal of Marine Science and Technology ； 21卷1期 (2013 / 02 / 01) ， P35 - 41

英文 DOI： 10.6119/JMST-011-0729-1

submerged breakwater ； wave breaking criteria ； wave energy loss.

Abstract │ Reference (17) │ Altmetrics

Parallel Abstract 〈TOP〉

Study on the criteria of wave breaking and energy loss caused by a submerged porous breakwater on a horizontal bottom has been performed experimentally in a 2-D wave tank. Wave conditions as well as the freeboard of the submerged breakwater, with the front slope of 1/2 and 1/5, are varying in the experiments. Results show that almost all tested waves can be triggered to break when the ratio of the estimated equivalent deepwater wave height to the freeboard of the submergedbreakwater is greater than one. Results also reveal that a milder front slope of submerged breakwater may not trigger wave breaking more efficiently as that with a steeper front slope does. Furthermore, for a given freeboard of submerged breakwater, longer waves are more difficult to be triggered to break than shorter waves as expected. It is found that a submerged breakwater function much more efficiently if waves can be triggered to break by the structure as expected. Furthermore, it is also found that the submerged breakwater with milder front slope consumes more wave energy than that with steeper one through a wider range of porous structure.

Reference ( 17 ) 〈TOP〉

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連結：
Dean, R. G., Chen, R., and Browder, A. E., “Full scale monitoring study of a submerged breakwater, Beach, Florida, USA,” Coastal Engineering, Vol. 29, pp. 291-315 (1997).
連結：
Garcia, N., Lara, J. L., and Losada, I. J., “2-D numerical analysis of nearfield flow at low-crested permeable breakwaters,” Coastal Engineering, Vol. 51, pp. 991-1020 (2004).
連結：
Goda, Y., “Wave damping characteristics of longitudinal reef system,” Advances in Coastal Structures and Breakwaters, Thomas Telford, London, pp. 192-207 (1996).
連結：
Goda, Y. and Suzuki, Y., “Estimation of incident and reflected waves in random wave experiments,” Proceeding of 15th International Conference on Coastal Engineering, ASCE, pp. 828-845 (1976).
連結：

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