In general, coastal damage is mostly occurred by the action of complex factors, like severe water waves. If the maximum storm surge height combines with high tide, severe water waves will overflow coastal structures. Consequently, it can be the cause of lost lives and severe property damage. In this study, using the numerical model, the storm surge was simulated to examine its fluctuation characteristics at the coast in front of Noksan industrial complex, Korea. Moreover, the shallow water wave is estimated by applying wind field, design water level considering storm surge height for typhoon Maemi to SWAN model. Under the condition of shallow water wave, obtained by the SWAN model, the wave overtopping rate for the dike in front of Noksan industrial complex is calculated a hydraulic model test. Finally, based on the calculated wave-overtopping rate, the inundation regime for Noksan industrial complex was predicted. And, numerically predicted inundation regimes and depths are compared with results in a field survey, and the results agree fairly well. Therefore, the inundation modelthis study is a useful tool for predicting inundation regime, due to the coastal flood of severe water wave.
The aim of this paper is to investigate experimentally and numerically the breaking limit, breaking and post-breaking wave deformation due to three different types of submerged structures such as bottom-seated, non-bottomseated fixed and tautly-moored structures. Based on laboratory experiments, the breaking limits have been formulated for three different types of the submerged structures. Moreover, a modified SOLA-VOF method with the nonreflective wave generation method has been proposed and found to be very effective in evaluating the wave breaking process and post-breaking wave characteristics.
Dynamic responses of two-dimensional and three-dimensional floating breakwaters have been discussed based onlaboratory experiments and numerical analysis. Two- and three-dimensional experiments have been conducted toinvestigate the dynamic behavior of floating unit for the floating breakwater. Wave height distributions have alsobeen measured in the experiments. The new type of floating breakwater arrangement has been proposed in thisstudy. Performance of proposed breakwater has been investigated. Numerical analysis has been carried out forboth two- and three-dimensional wave-floating breakwater interactions and validations of the analysis have beenexamined. Results show that the numerical analysis gives fairly good estimation of breakwater dynamics and wavedeformation due to breakwater. The floating breakwater arranged by the newly proposed method has beenconfirmed to reduce wave height behind the breakwater more than ordinal one.
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