Wave reflection, transmission and harmonics due to different submerged structures |
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Authors: | Gao Xueping Inouchi Kunimitsu Kakinuma Tadao |
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Affiliation: | 1.Hydraulics Institute, Faculty of Civil Engineering, Tianjin University, Tianjin 300072, China2.Center for Cooperative Research and Development, Ehime University3.Bunkyo-cho, Matsuyama 790-8577, Japan 3. Nagasaki Comprehensive University, Aba-cho 536, Nagasaki 851-0193, Japan |
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Abstract: | Comparisons of wave reflection, transmission and harmonics due to different types of sub merged structures are investigated by a numerical method, the boundary-fitted coordinate (BFC) method. The types of submerged structures include a submerged horizontal plate, submerged breakwa ters (rectangular and trapezoidal) and a step-type structure (topography). First, the BFC method is ver ified by comparing the computed results with the experimental data, including wave surface elevations, reflected and transmitted wave heights, and amplitudes of higher harmonics, showing that the method is a reasonable one to predict wave deformations due to the submerged structures. Secondly, the wave sur face elevations and the higher harmonics over different submerged structures are compared. Thirdly, re flected and transmitted waves due to different submerged structures are investigated. |
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Keywords: | Harmonic wave reflected wave transmitted wave submerged structure boundary-fitted coordinate method |
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