Transmission of obliquely incident waves at low-crested breakwaters: Theoretical interpretations of experimental observations

被引:8
作者
Wang, Baoxing [1 ]
Otta, Ashwini K.
Chadwick, Andrew J.
机构
[1] Univ Plymouth, Sch Engn, Plymouth PL4 8AA, Devon, England
[2] Indian Inst Technol, Dept Ocean Engn & Naval Arch, Kharagpur 721302, W Bengal, India
关键词
oblique waves; transmission; nonlinearity; currents; set-up; low-crested breakwaters;
D O I
10.1016/j.coastaleng.2006.10.005
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The paper presents a series of analytical and numerical investigations of oblique wave transmission at low-crested breakwaters. For a smooth breakwater, two important features of wave height and direction are analyzed to establish the generic nature of the wave transmission process at oblique incidence. The proposed framework of research is validated against laboratory data from the EU-sponsored project, DELOS. The numerical simulations exhibit a significant decrease of the transmission coefficient with increasingly oblique incidence at a smooth breakwater. The roles of wave-breaking, nonlinearity, wave-induced currents and set-up in determining the characteristics of oblique wave transmission are demonstrated in the paper. It is found that both the amplitude-dependent phase velocity and the decrease of mean wave period contribute to the change of mean wave direction on the transmission side. An attempt has also been made to qualitatively explain the different behaviour of oblique wave transmission at a rubble-mound breakwater. (C) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:333 / 344
页数:12
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