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题名: Investigation of Multiply Composite Artificial Bars for Bragg Scattering of Water Waves
作者: Li-Hung Tsai
Yu-Shu Kuo
Yuan-Jyh Lan
Tai-Wen Hsu
Wen-Jung Chen
贡献者: 國立臺灣海洋大學:河海工程學系
关键词: Bragg scattering
multiply composite artificial bars
undulating oscillation components
Miles' theory
日期: 2011-12
上传时间: 2018-10-19T07:02:00Z
出版者: Coastal Engineering Journal.
摘要: Abstract: The Bragg scattering of water waves by multiply composite artificial bars was investigated both theoretically and experimentally. Miles' theory is first employed to derive general formulae to calculate Bragg reflection coefficients for multiply composite artificial bars with different shapes, spacings, bar heights, bar footprint, and the number of bars. The theory provides explicit expressions in estimating Bragg reflections over multiply composite bars in practical engineering applications. The undulating oscillation components expanded with respect to the bottom slope and curvature components in the numerical model can increase the accuracy for the simulation of Bragg scattering. Experiments of Bragg reflection over multiply rectangular artificial bars were also conducted in a wave flume. Analytical solutions are in good agreement with numerical simulations of evolution equation of mild-slope equation (EEMSE) and laboratory experiments. Influence parameters that may lead to the optimal combination of a multiple artificial bar to increase the bandwidth of Bragg resonance were studied.
關聯: 53(4) pp.521-548
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50642
显示于类别:[河海工程學系] 期刊論文

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