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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/43195

Title: Bragg scattering of water waves by multiply composite artificial bars using Miles’ theory
Authors: Tai-Wen Hsu;Li-Hung Tsai;Ying-Tsun Huang
Contributors: 國立臺灣海洋大學:河海工程學系
Keywords: Bragg resonance;mild-slope equation;composite artificial bars
Date: 2003-02-25
Issue Date: 2017-06-08T02:36:20Z
Publisher: Coastal Engineering Journal
Abstract: Abstract:A numerical model is developed to investigate the Bragg scattering of water waves by multiply composite artificial bars. Zhang et al.'s hyperbolic equation (1999) is recast into an Evolution Equation for the Mild-Slope Equation (EEMSE). It has the advantage to economize computing time for practical application to a large coastal area. The characteristics of both normal and oblique incident waves on the Bragg scattering are investigated. Numerical computations are compared fairly with laboratory experiments. Numerical examples indicate that the performance of the Bragg resonance for multiply composite artificial bars can be greatly improved by increasing both the relative bar height and the number of bars with different intervals. The resulting higher-order harmonic components of the Bragg resonance are shown to be significant, and increase the bandwidth of high performance. The present results can provide an appropriate selection of a multiply composite artificial bar field to a practical design.
Relation: 45(2), pp.235-253
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/43195
Appears in Collections:[河海工程學系] 期刊論文

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