NUMERICAL SIMULATION OF WAVE IMPACT PRESSURE ON VERTICAL BREAKWATER

摘要

Breaking waves on vertical or sloping coastal structures produce impulse pressures that are high in magnitude and short in duration, compared with pressures exerted by nonbreaking waves. In recent years, model and prototype tests have been conducted to determine the history and spatial distribution of impulse pressures on smooth seawalls. Improved awareness of wave impulse pressure induced failures has focused attention on the need to include dynamic responses to wave impact in the analysis of loadings to maritime structures. The present study is concerned with a theoretical approach, which is based on the momentum impulse, to simulate the impact pressures on a vertical wall. The theoretical impact pressures are determined using varied velocity before impact process. The value of the impact pressure rise time is also determined through the model.