Numerical Modeling for Long-Period Waves in a Harbor Basin

A breakwater is a mechanism designed for the protection of a harbor basin, it becomes difficult for it to perform its sheltering functions when long-period waves propagate into the harbor, which leads to poor conditions for the body of water. In this paper, a BW numerical model was verified via a harbor wave-filling simulation, which yielded results that matched quite well with the physical model. The impact of boundary dimensions, angle of wave incidence, seabed friction, and water depth on the harbor’s long-period wave oscillation were studied. With these long-period waves, height will first increase, then decrease slightly and keep steady while the wave frequency stays constant when the model’s boundary dimensions increase. The angle of incident waves’ impact on the long-period wave height had a slight influence. Additionally, the seabed friction and water depth are inversely proportional to long-period wave height and oscillations.