Wave diffraction from a double-layered arc-shaped bottom-mounted porous breakwater

被引：0

作者：

State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China ^{[1
]}

不详 ^{[2
]}

机构：

[1] State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology

[2] School of Hydraulic Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology

来源：

Harbin Gongcheng Daxue Xuebao | / 5卷 / 539-546期

关键词：

Double-layered arc-shaped structure; Porous breakwaters; Scaled boundary finiteelement method; Short-crested wave; Wave diffraction;

D O I：

10.3969/j.issn.1006-7043.201201012

中图分类号：

学科分类号：

摘要：

To solve the problem of wave diffraction from a double-layered arc-shaped bottom-mounted porous breakwater, a semi-analytical model was established by the scaled boundary finite element method (SBFEM). The double-layered porous arcs were extended to form two imaginary complete circular cylindrical interfaces. As a result, the entire computational domain was divided into three sub-domains, which included two bounded and one unbounded sub-domains. A variational principle formulation was used to derive the SBFEM equations in each sub-domain, and then the SBFEM equation of each sub-domain was solved. The numerical results show that the present method yields excellent results with quite a few discrete nodes on the outmost virtual circle along with a quick convergence rate. The influences of varying short-crested wave direction, the relative wave number, the location, field angle, annular spacing, and the porosities of the arcs on the entire structure as well as the diffracted wave contour were extensively examined. Results show that the sheltering effects on the arc-shaped porous breakwater are closely related to those parameters.

引用

页码：539 / 546

页数：7

共 13 条

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