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The theoretical study on diagonal wave interaction with perforated-wall breakwater with rock fill

Acta Oceanologica Sinica 2009年第6期28卷 103-110页

作者： LIU Hongjie LIU Yong LI Yucheng Zhejiang Provincial Planning Design ＆ Research Institute of Communications Hangzhou 310006 China College of Engineering Ocean University of China Qingdao 266100 China State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian 116023 China

The interaction of diagonal waves with perforated-wall breakwater partially filled with rock fill is studied using the linear potential theory. By means of the matched eigenfunction expansion method, an analytical method is presented to calculate the reflection coefficient and the wave force coefficient of the breakwater. The calculated results of the reflection coefficient for limiting cases are the same to the existing results. The main effect factors of the reflection coefficient and the wave force coefficient are analyzed by numerical examples. With the increasing of thickness of rock fill, the wave force coefficient on the perforated wall generally decreases, while the reflection coefficient increases. With the increasing of the incident angle of the wave, the reflection coefficient of the breakwater first decreases, reaches its minimum, and then increases monotonously.

关键词： diagonal wave perforated wall rock fill reflection coefficient wave force

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Reflection of regular and irregular waves from a partially perforated caisson breakwater with a rock-filled core

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Acta Oceanologica Sinica 2007年第3期26卷 129-141页

作者： LIU Yong1, LI Yucheng 1, 2, TENG Bin1, MA Baolian3 1.State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China 2.R&D Center for Civil Engineering Technology, Dalian University, Dalian 116622, China 3.Tianjin Maritime Safety Administration, Tianjin 300456, China State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian 116024 China

The reflection of regular and irregular waves from a partially perforated caisson breakwater with a rock-filled core is examined. The present mathematical model is developed by means of the matched eigenfunction method. Numerical results of the present model are compared with the experimental data of different researchers. Numerical examples are given to examine the effect of rock fill on the reflection coefficient. The differences between regular and irregular waves are also investigated by means of theoretical and experimental results. It is found that the minimum reflection coefficient of irregular waves is larger than that of corresponding regular waves, but the contrary is the case for the maximum reflection coefficient.

关键词： reflection coefficient regular waves irregular waves partially perforated caisson rock fill

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