폐타이어 방파제의 파랑제어 효과에 관한 실험적 연구 = An Experimental Study on Effects of Wave Dissipation with Scrap-tire Breakwater

다국어 초록 (Multilingual Abstract)

One of the central problem in the study of the coastal surface wave environment is predicting the transformation of waves as they propagate towards the shore. The transformation is mainly due to existence of obstacles such as breakwaters and vertical cylinders. In general, the types of wave transformation can be classified as follows; wave diffraction, reflection, transmission, scattering, radiation et al. This research deals with the wave transmission and dissipation problems for two dimensional regular waves and scrap-tire vertical breakwater. Using the unsteady mild slope equation, a numerical model has been developed to calculate the reflection and transmission of regular waves from a multiple-row scrap-tire breakwater and vertical cylinders. In addition hydraulic model experiments have been conducted with different values of properties between the piles and opening ratio (distances) between the rows of the breakwater. It is found that the transmission coefficients decrease with decreasing the opening ratio and increasing the rows of vertical cylinders. Comparison between hydralic and numerical experiments results shows resonable agreement.