A Study on the Characteristics of Wave Variation in Ports Under the Condition of Breakwater Expansion

In this study, wave variation is analyzed in the rear of the breakwater when the wave direction flowing into the port changes. To do this, a three-dimensional hydraulic model experiment was conducted. The wave height change was examined at a total of 48 points, with a 7 m range in the structure installation direction at every 40 cm distance from the head of the breakwater, and three rows at distances of 20, 50, and 80 cm inward from the breakwater. The results of hydraulic model test exhibited that the wave amplification phenomenon decreased as the distance from the head of the breakwater to the inside direction. It was also shown that the range of change in the wave height distribution due to wave direction change decreased. The main factor that influenced the change in wave height ratio was wave direction, while the incidence of long-period waves had a direct impact on the increase in wave height in the inward direction of the port.