Abstract
This study investigates, experimentally and numerically, the wave-current interaction and its mechanism. Hydraulic model experiments and numerical analysis have been conducted to measure the wave height distribution and velocity field. Both results show that the wave height increases due to the wave-current interaction at initial stage, and then wave height decreases with wave propagation against the flow. The intensity of interaction seems to depend on incident wave period. It is found that the wave weakens the current velocity and interaction between them raises the mean water level. Also, spilling breaker due to interaction contributes in decreasing wave height.
