| Summary: | 碩士 === 國立臺灣海洋大學 === 河海工程學系 === 92 === In this study, a series of hydraulic model tests of wavy-type submerged structure, wavy-plate and wavy-dike with cosine and sine shapes, was carried out in a large wave flume with regular and irregular waves. The wave field around the structure alone, and the structure allocated in front of a vertical breakwater was investigated. The optimal submerged depth and location was tested. Reflection and transmission coefficients, wave pressures and wave forces acting on the vertical wall was measured and analyzed. Also, the wave pressures acting on the submerged wavy-plate was investigated. The results show that, in all cases, the reflection coefficients become larger as submerged water depth become shallower. The wavy-dike with sine-type can reflect more wave energy than wavy-plate with sine-type. However, the cosine-type structure can reduce more wave force acting on vertical wall, and the wavy-dike is better than wavy-plate. Due to the complicate wave field in adjacent to the vertical wall and submerged structure, smallest wave force on vertical wall is not occur at the largest reflection coefficient case.
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