Experimental study on mean overtopping discharge of sloping seawall under oblique and multidirectional irregular waves

LI Xiao-liang; YU Yu-xiu; ZHAO Feng-ya; LU Gui-rong

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LI Xiao-liang, YU Yu-xiu, ZHAO Feng-ya, LU Gui-rong. Experimental study on mean overtopping discharge of sloping seawall under oblique and multidirectional irregular waves[J]. Haiyang Xuebao, 2007, 29(1): 139-149.

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Experimental study on mean overtopping discharge of sloping seawall under oblique and multidirectional irregular waves

State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China

Received Date: 2006-03-28
Rev Recd Date: 2006-06-17

Abstract

Abstract

On the basis of three-Odimensional physical model tests the relations among the wave overtopping of sloping breakwater under oblique and multidir ectional irregular nonbreaking waves and some influencing factors involved in an incident wave and breakwater were investigated.By paying special at tention to the effect of obliquity of incident wave on overtopping the phenomena so-Ocalled "increasing at small degrees of obliquity" have been found for the multidirectional waves but not for the unidirectional waves.It is found that the wave overtopping of multidirectional waves is larger than that of the unidirectional waves if the incident wave is oblique.After comparing the test results with existent for mulae, aformula suitable for estimating the overtopping of concrete and block armor sloping structures under oblique and multidirectional irregular waves is presented.
- mean overtopping discharge,
- sloping seawall,
- relativecrest freeboard,
- angle of wave attack,
- directional spreading

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References(11)

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