원형파일군에 의한 파랑제어 특성

• Published in: Han-guk haeyang gonghak hoeji (Online) Vol. 22; no. 4; pp. 27 - 33
• Main Authors: 이성대(SEONG-DAE LEE), 김성득(SEONG-DEUK KIM)
• Format: Journal Article
• Language: Korean
• Published: 한국해양공학회 2008
• Subjects: 해양공학; Hydraulic experiment 수리실험; Opening Ratio 개구율; Vertical cylinders 원형파일군; Wave dissipation 파랑감쇠; Numerical model 수치모형; Unsteady mild slope equation 비정상완경사방정식
• ISSN: 1225-0767; 2287-6715

One of the central problems in astudy of the coastal surface wave environment is predicting the transformation of waves as they propagate toward the shore. The transformation is mainly due to the 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 dealtwith wave transmission and dissipation problems for two dimensional irregular waves and vertical circular cylinders. Using the unsteady mild slope equation, a numerical model was developed to calculate the reflection and transmission of regular waves from a multiple-row circular breakwater and vertical cylinders. In addition, hydraulic model experiments were conducted with different values for the properties between tire piles and the opening ratio (distances) between the rows of the breakwater. It was found that the transmission coefficients decreased with a decrease in the opening ratio and an increase in the rows of vertical cylinders. A comparison between the results of hydraulic and numerical experiments showed reasonable agreement.