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http://dx.doi.org/10.1016/j.ijnaoe.2019.03.006

Investigation of surface-piercing fixed structures with different shapes for Bragg reflection of water waves  

Ding, Wei-Wei (School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University)
Zou, Zao-Jian (School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University)
Wu, Jing-Ping (School of Transportation, Wuhan University of Technology)
Huang, Bai-Gang (School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University)
Publication Information
International Journal of Naval Architecture and Ocean Engineering / v.11, no.2, 2019 , pp. 819-827 More about this Journal
Abstract
Bragg reflection of water waves by three kinds of surface-piercing fixed structures with rectangular, cosinoidal and triangular shapes is studied. Boundary element method is used to analyze the wave scattering by these structures based on the linear wave theory. Results of reflection and transmission coefficients are validated by comparing with those available in literature. These structures with proper configurations are proved to be effective in attenuating waves by using Bragg reflection, and the triangular structures are found to be the best choices among the structures with same width and same area. Systematic calculations are then carried out for the triangular structures by varying the number, the draft, the width, the gap and the combination of width and gap of the structures to analyze their influences on the characteristics of Bragg reflection. The results are of reference values for design of the structures to attenuate waves based on the Bragg reflection.
Keywords
Surface-piercing fixed structures; Bragg reflection; Wave attenuation; Boundary element method;
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