Wave reflection from partially perforated-wall caisson breakwater |
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| Authors: | Kyung-Duck Suh Jae Kil Park Woo Sun Park |
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| Institution: | aSchool of Civil, Urban, and Geosystem Engineering, Seoul National University, San 56-1, Shillim-Dong, Gwanak-Gu, Seoul 151-742, South Korea;bDaelim Industrial Co., Ltd, 146-12, Susong-Dong, Jongno-Gu, Seoul 110-732, South Korea;cCoastal and Harbor Engineering Research Division, Korea Ocean Research and Development Institute, Ansan P.O. Box 29, Seoul 425-600, South Korea |
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| Abstract: | In 1995, Suh and Park developed a numerical model that computes the reflection of regular waves from a fully perforated-wall caisson breakwater. This paper describes how to apply this model to a partially perforated-wall caisson and irregular waves. To examine the performance of the model, existing experimental data are used for regular waves, while a laboratory experiment is conducted in this study for irregular waves. The numerical model based on a linear wave theory tends to over-predict the reflection coefficient of regular waves as the wave nonlinearity increases, but such an over-prediction is not observed in the case of irregular waves. For both regular and irregular waves, the numerical model slightly over- and under-predicts the reflection coefficients at larger and smaller values, respectively, because the model neglects the evanescent waves near the breakwater. |
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| Keywords: | Breakwaters Laboratory tests Numerical models Perforated-wall caisson Water waves Wave reflection |
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